Playing around

For some reason I was in my co-workers car, the beginning of the dream is a bit blurry. He told me to drive, so I moved behind the wheel of a black Audi A3 Cabriolet. The whole time, there was a lot of tension between us, and then we drove to what's my house, but he got out of the car and I thought that then we'd change seats, but he asked me to continue driving. Suddenly we were at my place, he was nervous that my bf was coming home but I said he's just gone to work so he can't come home. At first we were just talking, then it went to sort of hugging. He then pushed me away saying we can't and I told him that we're not doing anything wrong, that it's not like we're having sex (or something like that). He/we went on about if it's right or wrong and then he came closer. I could feel he was getting a boner so I stroke his pants (what was super weird though that at the same time it was something got hard in the back too, like he had such a long penis that he'd bent it to the back :D haha, but it was something else, his penis was all in the front). The stroking led to kissing, which at first was super awkward. He opened his mouth really wide and took in part of my teeth too ( I guess just nervous) and then got normal, and I was getting so horny. Suddenly we were not in my house anymore, we've moved to some cabin. There we stood stroking and talking if it's right or wrong and getting really horny. Then I saw my bf's brother parking his boat outside and coming in and I told my co-worker to hide so no one would see that we are there. Then they saw us, and by the time the brother got in, I was putting on my panties, all though I never even took them off, but got a flashback that the guy I was with, was touching me down there. The brother was all confused and asked what's going on and I took him to this other room and explained to him that nothing's happened and he said "yeah nothings happened, are you cheating on "A"" and I said "no, but you have to understand. I'm so tired of him, all the crap he uses, all the money issues, the way he talks, all of it. But I did not do anything, there was just a kiss and some dry hump touching but I did not have sex" and the brother said then "Ok, well I guess its fine then, but "A" is going to be so heartbroken if you ever do something with that other guy and leave him, so don't hurt "A"". I staid in the room, sat on the floor and sent a message to someone, I think a friend and the guy I came to the cabin with walked buy the room.. and that's all I can remember. At some point, I guess it was when we were driving, we did talk a lot about cheating on our partners, can we do this, could we cheat and should we, what is this whole thing between us and what's up with the sexual tension.