Why does this guy flirt with me inbetween making out with his girlfriend?

so theres this guy at school who always flirts with me. i kind of like him, but he has a girlfriend. i dont understand him! why does he always flirt with me in class and then make out with his girlfriend and then keep flirting? its starting to annoy me. what should i do?

Why does this guy flirt with me inbetween making out with his girlfriend?
He's keeping his options open, obviously he sees you as a trade up... I dare not advise, take that as you will...
Reply:It's simple coz he likes you so much. The best thing that you will have to do if you liked him too, just go for it and have fun together. They are not married yet, i guess so just enjoy and stop worrying about his gf....you might be hot than her (gf) so just carry on, life is too short....All the best!
Reply:Don't do anything. He is a flirty person. When he starts talking to u in a flirty way just walk away or interrupt him and say please don't flirt with me while u have a girlfriend. People do flirt with other people if their seeing or dating other people. It's just a natural instinct for people. But they should know the boundaries and respect their significant others. So politely tell him not to flirt with u anymore while he has a girlfriend if ur that uncomfortable with it.
Reply:He has a gf, leave him be. He likes the attention you are giving him (your fueling his ego) STOP! Dont play his game or you will end up looking like the girl who broke up him and his gf. And thats never a good look!
Reply:He is a player. He is just trying to line something up on the side.Don't allow him to make eye contact with you.