how did he feel about it afterwards? if he still enjoyed it then he could be bi .would he do it again?
if not then i`d say no not gay.
personally i had a 3som with wife and another guy and wife persuaded me to let other guy blow me and as soon as he put his mouth on me i flopped lol does that make me gay?
i didn`t enjoy it btw and wouldn`t try it again his tongue was a lot rougher so maybe your pal knew?
1 yes
2 yes no yes no
3 yes (loved it then hated it still unsure but still get turned on by it)
you know the old saying........be carefull what you wish for.....