Help! Why does my friend flirt with me and every girl!?

hey there im a guy take it from me he likes you definately but maybe he wants to get around. YOu need to start flirting with other guys, trust me. Do this and dont hang out with him so much, but when you do still flirt with him. He will definately get jealous. Dont overdo it obviously but when he comes to you and says he is jealous just say we arent a couple so we arent exclusive, but give him the option to make it exclusive. he sounds like a bit of a player though.