Yes....he can be....it's a possiablity
Ya, but if he flirts with you WHILE he has a girlfriend then that isn't good
tell on him and tell him leave my girlfriend alone.
he doesn't respect his girlfriend nor their relationship, and if you were to become his girlfriend, he would treat you the same way.
Do some research, find out if he has a girlfriend.
Answer: If your girlfriend is flirts with other men then there is something she is not getting from you, proberly love and attention. (Romance)u got to flirt with her more if u want to no how to flirt look at this other question i answered How_do_you_flirt_with_your_girlfriend
If you are in middle school and a boy flirts with you, but has a girlfriend, you should ignore his flirting. Even if he likes you, he still has a girlfriend. You should respect his relationship with the other girl since you would not want him to flirt with another girl if he was your boyfriend.
make sure that he is flirting with you...and if he really does like you then tell him that you cant go out with him until he breaks up with his girlfriend.
He probably got his feelings back for her
That is simple. Tell her how you feel.
he broke her heart and now flirts with every girl he sees
dont go for it hes trying to make his girl friend jealous but if he breaks up with her be there for him.