If he chats with you. It doesn't mean he is playing with your feelings. May be he really likes chatting with you. If someone is in a relationship it doesn't mean he can't chat with other girl. But have patience if he is doing wrong it will soon came into light.
Yea....he might just be only happy chatting with you anyway but that doesn't mean you should fall for him because if you do....am sorry, you might end up being cheap.
Cmon, be smart girl. Even if he interest in you, the fact he already have girlfriend and still flirting with you, it conclude he is douche and you should stay away from this kind person.
.. ask yourself if you're happy?..if you keep chatting with him,there is someone who fell broken....just think that if that's happening to you what would you feel if you learned that your boyfriend is cheating on you?
I think you should quit chatting with him before you fall in love with him. You still can shake out your feeling when it only initial stage such as like