How to know if a guy is bisexual?

[Dalton]

I'm a pansexual guy and I've liked this guy for over a year now, and my best friend said that he told him that he likes me, but it says on his Facebook that he's interested in women. I've heard from a lot of other people that he is bisexual,but I've also heard that he's straight:/ and I'm too scared to just come right out and ask him. Thanks c:

[Callum]

Don't take what you read on Facebook as the universal indicator. Just be straight up about it and ask him. It'll save you and him alot of time and you won't be stressing about it.

[Lolalola]

Ask around. Or just watch who he dates. OR wait for him to possibly ask you out and if your fearless, get him alone and ask him it generally. Like ask him stuff like "I heard you were dating this boy" and if responds disgusted he's probably straight inless he's hiding it.