Hi..I really don't think your bf's action at age 5 made his brother gay by any means..I have 2 sons that are also 3yrs apart. When they were similar age(2/5) they had a neighborhood girl that was 7 that often came to our house to play since I felt sorry for her she didn't have parents home a lot. This girl had an older step brother who I learned much later she had most likely been molested by. One time she ws over I walked in on the kids as she directed my older 5yr old to touch his brothers privates...being 2 my baby didn't know what was going on..Although I may have over reacted at the time she was not allowed over again and I spk w/my boys about bad touch etc...we never talked about it again...both my boys are heterosexual..have/had gf...so I don't believe at all he had the influence for his brother's sexual decisions...He would benefit from counseling tho..if he acted out this way it may have been because he saw something...whether it was porno or otherwise...I'm sure this is difficult for you to see him go through this..but being supportive and being in a relationship w/someone that is going through this will be difficult...I suggest for now try bbeing a good friend/support system in love him but not be in love...bc you will not be in a fulfilling relationship since he can really only focus on himself right now...you need to also be thought of and have your partner support you etc..Hope he gets some help and he is lucky to have you in his life for support Good luck