1.The guy will try to make you laugh.
2.He'll flirt with you when he can.
3.He might try to show off around you.
4.He'll help you out, if you ask for it.
5.He'll stick up for you when you need it most.
6.He'll be friendly to you and all your friends.
7.He might call you for no good reason.
8.He might make fun of you, in a joking way.
9.He'll tell you that you did good, even if you did horrible.
10.He'll make eye contact with a happy grin on his face.