My partner claims to be straight, A few years ago he watched straight porn with another guy and they jerked themselves off, this happened 3 seperate times. A year later after viewing several gay images online and looking up gay saunas and cruising spots in the area (claiming he never went or used them) Eventually found a gay guy on Craigslist went to his house twice same deal straight porn jack off only second time the other male started to give him head but my partner says he finished himself off. Found another guy in craigslist to give him head in which he came, after that he claims it freaked him out as it was a guy down there and was enough to put him off and hasn’t thought along those lines since...(about 4/5years who) He says he was curious never confused about his orientation and never wanted or could bring himself to preform any sexual acts on them. Is he kidding himself and is bi? Or can a straight man literally have a few experiences and it’s not for them?
Only he can answer that... But I believe that curiosity and a few experiences here & there don’t mean that someone is ‘gay’ or ‘bi’. Being open to trying new things is a good thing.
A straight guy can have a few experiances and then find out it's not for him, however t does seem like that is not the case, wether he is bi or not probably depends on how you define bi. plus speaking from a purely logical point of view then what really is the difference between a guy sucking him of or a girl? same thing goes for anal what the difference if he is performing anal sex on a guy or a girl? Perhaps what he wants is for you to join.
Many men and women go through a curiosity stage wondering if it would be "their" thing. Until they actually experience it they will never know either way. He may be one where the phrase "Curiosity kills the Cat" is true. He tried it and found out it wasn't for him. I've never considered two guys/girls masturbating each other making them gay or bisexual...friends helping friends...Just my opinion. I really think it's a personal decision for one to make for one's self. Many people have fetishes that need quenched. Many are closeted. Hell, does it really matter? He certainly has bi-sexual tendencies. Yes, I believe a straight man can have a "gay" experience and decide it's not for him after having experienced it to quash the curiosity.
There is only one way to find out and that is to experience it. You will know if its a curiosity thing or you like it or not. I believe a guy can swap bjs but not have any deisres for a man or anything other than that. Nothing wrong with trying it out to see if it's for you or not.