Is It Really Cheating

My neighbors across the street live a certain lifestyle. I divorced a couple of years ago moved in here and though nothing. They were more talkative than the others. Tony and Yvette where a nice couple there mid 40s with an older teenage boy. He owns his own company she is a stay at home mom. There boy is now 16 and hardly ever home. About 6 months after I moved in I had been over there hanging out with Tony a bunch of times never had any weird feelings or conversations. We drank a few beers together it was fun. Yvette was easy on the eyes. She was a short curvy fake blond. Nice tits nice ass thick ass thighs. Anything she wore she showed off her curves. Tony Caine a few times checking her out and commented how nice her ass was. He called me out a few times in front of Yvette and I owned up to it letting her know that hell yes I looked she was hot. A few weeks go by and they invite me to a small gathering at there place. I show up at there place around 6:30 there is a few people there. I was in jeans and a polo and I felt a little underdressed. Yvette is in a dress tits popping out looking hot a few other women there dressed similar. Guys are in suits or dress slacks. Im mingling meeting a few people drinks are flowing I had a seen Yvette in a while the drinks have me feeling good. I walk into the hall passed a bedroom and see 2 guys with a women I had seen earlier. The 2 guys neither of the guys where her husband. I found him in another room with Yvette on her side only wearing a g string. I was like WTF she saw me waved me in and said close the door. The guy in the room looked a it irritated but she wanted me in there so I came in. I don’t brag but my cock is about 7 inches in length and very thick. They guy who was rubbing her had his cock out and was half my size but it didn’t matter. We used her for a good amount of time. He left the room to go back to the party and I gave Yvette round 2 and 3. Woke up the next morning next to her. Walked out to Tony making us coffee. Yvette was in a shirt I had hickeys all over my neck. All Tony said was hey you got to play with that ass huh. I laughed and said thanks. It was a weird night but fun. This happened a few times a year. One day Tony comes over and says hey can you keep an eye on her this week. Just be on the lookout I’m going to be out of town and I think she may be seeing some other guy. I guess if he knows about it it’s ok but when she does it on her own it’s not. I was confused but I said sure. I had fucked her a few times only at there parties. He left and I keep an eye out but nothing out of the normal. She came over one evening and asked me if I was supposed to keep an eye out on her. She called me out I laughed and said yeah kind of. She said that some guys always try and hook up after. Tony had seen a message from one of the guys from the party and he was hinting for her to meet up with him on the side. She said she had never done that and would not. She vented and felt better. Well by the end of the night we had fucked a few times. I’m not sure what happened but she admitted that my cock was the largest she had ever felt and missed it. Since then I have been doing her almost daily and at there parties she does not hook up with anyone else but me now. The people from the parties are starting to talk and we are a little nervous. I admit I am addicted to how my cock splits her ass cheeks and the sounds he makes.