backstabbing loser
This is a boy who tells you that he loves you, but really he just wants to lead you on and break your heart. This boy will tell you he loves you and then he will go after your friend, just to make you wish that you were closer to him. Your friends will usually know when a guy is a backstabbing loser, but the backstabbing loser will put up a charade that makes you fall more in love with him and then he will rip your heart out and throw it in the dirt. Your friends will warn you about this person, but you will ignore them and go after him and then regret it immediately.
Girl 1" Wow Marcus is such a backstabbing loser, I can't believe that he told you he loved you and then went after that other girl."
Girl 2 " I know right he is such an awful person.
Girl 2 " I know right he is such an awful person.