Flirting is a harmless way to let someone know that you like them. When flirting on the phone, you will want to do things like, laugh at their jokes, even if their not funny. You can also tell them things about them that you like or suggest doing something together.
Tell them noob
find a reason to ask them how they spell their name
how can you tell if a boy is flirting with a girl and also likes her to an extent?
there can be many ways: giving you the eye or any signal at all
If you are over them and not with them anymore you really have nothing to prove. If you feel for some reason you have to tell them something just simply tell them whether they believe it or not it is over and you have no underlying feelings left for them.
You could actually tell that someone ( which takes a lot of guts), or the old fashion way flirting.
He keep's flirting with you, he's alway's around you and he alway's tries to ask you out
You'll Know because he will smile and look away. He'll turn red around you.
you can tell by their body and face language,if their smiling touching and playing around then yes
Trust your gay-dar. If the responses to your flirting are positive there is a high probability.
The painfully true answer to this is-you have to tell them one way or another. Either that or get over it. Perhaps subtle hints such as flirting will ease you into it then possibly tell them one night. If you don't want to then maybe you can get a friend to leak a rumour or something so they are aware of your feelings :D