Uh...yeah. It's not the black plague. It's not contagious. Gay people are no different than straight people, except for the fact that they are attracted to members of the same sex instead of the opposite sex.
If he or she is your friend then you should treat them as such. Their sexual orientation should not enter into the matter.
Gay men are primarily sexually attracted to other men, rather than women. I hope you will still be friends if your friend turns out to be gay!
If this guy friend isn't gay, then is very offensive to him if he is your friend, and you end up liking him. You must talk to him and ask him if he is alright with you still being friends.
That he's gay or at least bi/experimenting.
Absolutely not, a friend who gay, lesbian, or bi-sexual is doing what any friend should do and that is being supportive.
You can not tell if someone is gay by wrestling with them. The only way to know for sure is if they would choose to tell you they are gay. It should not matter anyway, especially if they are your friend, you should accept them for who they are.
you should just ask him out.
Yes you should because if they are really your friend they would understand.
Try it.
Nothing unless you are also gay and want a relationship with him. There is nothing you can do to make somebody who is gay, not gay !
If you are gay, no if not Yes
she can always be bisexual its perfectly natural