And why can't you seem to remember I'M NOT YOUR GIRLFRIEND?! Like seriously!

After I told him that his girlfriend yelled at me in the hallway and told me to stop talking to him, he said, "She'll get over it."

But She won't. She's not that kind of girl.

He asks me what my weekend plans were and asked if I wanted to meet up.

*insert le facepalm here*

This is that same guy that I tried so hard to forget because he was dating one of my bestfriends. Well they broke up and he's dating this other chick now. AND HE STILL FLIRTS WITH ME!

But I don't know what to tell him, because it's evident that he likes me, but I can't do that to his girlfriend, who despite yelling at me, is one of my best friends.

And I can't tell him how I feel.

What do I do?