So, I hear you are into boys. Or, I hear we have something in common. Or just ask them out as you would any date. The fact that you are asking them should let them know your intentions.
there is no way to know for sure if another person is gay with out a confession. lol trust me
You will know if u fancy a boy and a girl at the same time.
Unless they were open about it, I guess you could never be certain.
If a bisexual wants you they will show you signs, flirt with you a little bit, talk to you alot, start to hug you passionately. There is nothing wrong with a bisexual liking a straight person, it is completely normal, just be the bigger person and ask them out for meals and things, they would appreciate that.
There is no real way to tell. The only way to know is to talk to him.
Same way you can tell if a straight man likes a girl. Usually they would admit to it, it act like they have a crush on that person
You can tell by the gender of the person/people you are attracted too. And if that's still confusing, you might be bisexual.
If you're bisexual and desire a sexual experience with another man, subtly approach the subject using a theoretical situation. Talk about a friend who wanted to ask a guy for sex, but didn't know how.
There are no signs. If you are bisexual, no one will know for certain unless you tell them.
* Bisexuality is not for everyone and is simply a sexual choice. This does not make the person gay, but they have made a sexually sociable decision to have relationships with both sexes. Some feel they want to experiment, while others seek enjoyment as being different. A person would know if they prefer a bisexual relationship if their mood directs them towards the opposite/same sex and they find that person sexually attractive.
Its not up to other people to answer whether or not their friend is bisexual. If you want to know someone's sexuality, just go and ask THAT person. Don't rely on other people. That's how rumors start.
* It would be very wise to be sure that this other girl is bisexual as well because if you don't rumors can start and the gossip will spread like wildfire. If she is bisexual then you will have the to run the risk of telling her how you feel.