Ask him " are you playing or do you really like me? "
if your tall and the man is really attracted to you you'll know. if he recoils at the sight of a short woman you'll know.
Sometimes, women themselves don't even know the answer to that. Look at who she is in other parts of her life and how she treats other people.
feelings change along with the girls mind and the way she sees you now
You ask her!
You can't. But if you don't talk to him it really doesn't matter.
She lets you in the backdoor.
well you should ask him up front if he likes and if he hesitates or says well first then he is definetly not telling the truth. Thus if he says it up front then he really likes you.
That is statistically impossible to answer and if a man thinks a woman likes them and they are even slightly attracted to them they will show some interest if they are single. They may also ignore the woman and not really care especially if there with the guys. It really just depends and cannot really be stipulated.
If he is more friendly for you.
if he is around you alot
well if a girl is Bisexual then that means not only she likes men but woman also so i don't know if your a female or male but i doesn't really matter a bisexual girl can like you.