Kiera had convinced me to go away for the weekend with her. She was having problems with her marriage as her husband Victor worked away a lot and when he was home they weren't having sex very often or going out anywhere as he was tired. He earned good money and they had a lovely home and Kiera could buy whatever she wanted and though she loved the lifestyle she wanted more. Kiera had told me she was considering an affair but I tried to tell her that a bad idea as it wouldn't help the marriage and it would hurt Victor who loved her. Kiera then thought if she got away for a few days that might help her to think which was why she pushed me to come with her. When we arrived at the beachfront hotel we were shown to our rooms. Next to each other with ensuite bathrooms and a shared balcony. It was mid afternoon so we decided to go get a drink at the bar then walk along the beach as it was warm. Having chosen to wear a loose fitting red top, white shorts and sandals I looked at myself in the mirror. I still looked quite attractive even though I'm in my early forties. Long light brown hair, cute face, slightly chubby, boobs that were more than a handful, nipples that still pointed forward and a big ass. Picking up my bag I went and knocked on Kiera's door. When she opened it I was surprised to see her in an incredibly short pink dress. Tight around her curvy body it left little to the imagination. Kiera was beautiful with long golden blonde hair, pretty face, perky boobs and an ass so pert and tight it could open a beer bottle. "How do I look?" she asked and I replied "Stunning". We made our way down to the lobby and into the bar. We ordered our drinks and I could see guys already checking her out. Imagining what was going through their minds I guessed it wasn't taking her out to a gallery. We took our drinks outside and sat under a sun umbrella. As I was looking at my phone a guy walked up to the table and began talking to Kiera. He was tall, blonde hair, tanned and muscular. I wasn't taking much notice to what they were saying as I was reading about a film I wanted to see. However I then felt a hand on my shoulder and looked around to see Kiera standing next to me and she said "I'm going back to my room". As she walked away with the guy I called out "Is that a good idea?" but she just waved her hand at me. We've only been here five minutes and not only has she abandoned me on the holiday she wanted to come on but now she was no doubt going to cheat on her husband. I felt sorry for Victor as he was always kind to me and though Kiera was a friend I thought she was wrong to do that to him. Looking back at my phone I finished my drink then an idea came to me. Our balcony is shared so if Kiera has left her curtains open i could film them on my tablet which was in my room. Standing up I walked quickly to my room. Once in the lift I wondered why I wanted to catch them on film? Was it because I was annoyed that she'd left me alone? Was it to show her husband or was I just horny as I hadn't had sex for a long time? Whatever the reason I was going to do it. Reaching my room I took my tablet out of my bag and went to the balcony door and opened it. I made my way to Kiera's balcony door and could see the curtains open. Peeking around I saw her and the guy sitting on the edge of the bed kissing. Turning my tablet on I accessed the camera then resting it on it's stand I placed it on the floor of the balcony and tilted it so I could see them both on screen then I pressed record. Leaving my tablet I went back to my room. The walls of the hotel must have been thick as I couldn't hear any moaning. Flicking through the TV without watching much after an hour I went back out on the balcony to retrieve my tablet. Nearing Kiera's door I perked around and saw them lying under the sheet holding each other. Taking my tablet, I ended the recording and went back to my room and locked the balcony door. Pulling the curtains so as not to be disturbed I lay on the bed and played the video. Kiera and the guy were kissing then with their hormones obviously racing they quickly undressed each other until both were naked and laying on the bed. I couldn't help but notice that the guy had a large dick. Even soft it must have been nine inches. With Kiera now laying on the bed the guy parted her legs and buried his head against her pussy. I could see she still had a hairy bush but couldn't see her pussy due to the camera angle. The guy knew what he was doing as Kiera was writhing about on the bed grabbing her perky boobs and moaning. Unfortunately I couldn't hear them on the recording as the balcony door was closed. It didn't take long for her to come as I saw her back arch and she shook as she orgasmed. When the guy straightened up I saw his dick was now erect at least another inch longer. He now layed on the bed with his dick pointing to the ceiling as Kiera got on her knees by his side and slid her mouth over his tip. Then holding his shaft at the base she slid her mouth about half way down then I could see she nearly gagged. Not trying to take anymore in she began sucking up and down. Wondering why they hadn't used a condom I saw Kiera sucking quite fast and the hand that was on the base of his shaft was now jerking him off while she sucked the top half. The guy was definitely enjoying and I must confess my pussy was now wet as I watched them. Pulling his shaft as quickly as she was sucking I saw the guys groin buck in the air and his mouth opened as his groaned as he came hard inside Kiera's mouth. To her credit she kept sucking and took all of his come down her throat. Taking her mouth away followed by her hand the guys dick went soft as they lay there. For the next half hour they just talked then Kiera began jerking the guy off and he soon got hard again. Then the guy got on top of Kiera and she guided his dick against her pussy before he began to push it inside her. Kiera's face grimaced as the man pushed his large dick inside her and I could imagine her pussy stretching to accomodation his erection. He got about three quarters in then with Kiera still visibly in pain he began to thrust. Her pussy lips were sliding up and down his thick dick as she was moaning out loud. The guy was soon ramming his dick hard into her and she put her hands on his back and dug her fingers in. Her head was tossing from side to side and was obviously loving it. The guy had a firm ass which I enjoyed staring at. She put one of her legs around him which seemed to push him deeper into her pussy. Kiera then started shaking and came again so the guy stopped thrusting until she had finished. I could see she was so out of breath as the guy then carried on. He was soon ramming his dick into her again and her boobs were swaying back and forth so hard it aroused me even more. The guy was sweating and breathing heavily then he stopped with his dick deep inside her pussy and I could tell he was ejaculating inside her again. When he stopped coming he pulled his dick out and layed on the bed. Watching it go soft Kiera then pulled the sheet over them. After that there wasn't anything else to see. I lay there thinking what I should do. Masturbating was certainly an option as I was horny now. Should I keep the video, delete it or email it to Victor. Tempted to go with the last option I went to my emails and selected Victor's email address which I had because we both liked movies and shared news with each other. Then I attached the video and wrote the message "Sorry Vic but you might want to see this". Then with my finger over the send button I spent the next ten minutes contemplating whether to press it. If I do I'll lose my friendship with Kiera but at least Victor will know the truth. If I don't send it Kiera and I will still be friends but Victor won't know his wife's a cheat. I pressed the send button. I was going to leave the story there but I thought you might like to know what happened. After sending the email I waited for a reply from Victor. Just under an hour later he replied saying "I can't believe that cheating whore. I'm taking the next train down to the hotel. Thanks for showing me". Not wanting to be here when the fireworks started I packed my things and checked out without Kiera knowing. She must have still been in bed with the guy no doubt having sex again. Taking a taxi to the train station I soon boarded the train home. My pussy was still wet on the train as I hadn't masturbated at the hotel. Reaching home in the late evening I unpacked and showered. When I checked my phone there were multiple messages from Kiera. The first few were asking where I was then the next ones must have been sent after Victor had arrived as she was calling me all kinds of names and asking how could I have dont that. She also said I was jealous and that our friendship was over. I didn't bother to reply. Maybe she was right. Perhaps I was jealous that she had a loving husband and jealous of the pounding her pussy took earlier. However at least I'm not a cheat. That night I fingered myself to sleep picturing that guy then the following day Victor messaged me saying that he spent the night in another hotel and that their marriage was over. Kiera had told him that she didn't love him anymore. He was going to file for divorce as soon as possible. I felt some guilt about what I had done but also felt I did the right thing.
