How do you tell if a guy is bisexual?

Answer 1

Short of them telling you or making the fact public, there is no way to discern whether a person is bisexual or not. If you really feel the need to know, ask them privately, but accept they can and may refuse to answer or lie.

Answer 2

Ask them if they are or are not. It's the only way.

Answer 3

The only way would be if he had sex with another guy or he told you himself. otherwise, it's just all talk.

Answer 4

if they have sexual intercoarse with men and women

Answer 5

The only way to tell is to ask them.

Answer 6

Ask them.