Thanks for the replies guys,
The first situation i was saying i was pressured into it because i wasnt completely convinced yet, he thought i would just hop right on board and think it was okay. I admitted i wanted to try it, he just pushed it too soon, the fact that the other guy was a cheater just added on to my doubts. I felt like i wanted to do it but i had this deep down feeling like everything is going to go wrong, that it was bad morally. Im not religious at all and had no definement of right and wrong when i was a kid.
I want to try it but somedays i feel okay with a 3 way and other days i feel like whore for wanting it :/
I was also wondering if anyone has had one sided 3 ways, like i dont want to touch a MMF with a far away stick if it meant in the future i would feel like i had to do MFF. Is it possible to have one sided relationships like that?