I’m an older gay man and have only had sexual relations with str8 men. Im not sure why. I know that some say that if you have sex with men then your not str8 but gay. Well I know a lot of str8 men that have sex with men on occasion. Emotionally they are attracted to women and dont want that kind of relationship with another man. Just the sex.Well recently the brother of my sisters husband came to visit over the Xmas holiday.Im 42 yrs old and he is 22. We have known each other for 6 yrs and have always been buddies. But this time he came to visit things changed between us and we had sex twice. Afterwards it was very confusing for me. Im not sure if I crossed a line that I should not have since he is so much younger than me and is family by marriage. We have talked about it and hes fine with everything. We are closer now as friends then we were before. But I still sort of feel guilty. str8 acting?