OK so my gf(alexa) just broke up with me cause I she said I wasint acting like a boyfriend but she wanted me to keep it under the radar then she brakes up with me for that reason. But the big problem here is that before me and her and the other girl briana who is was her best friend got to 6 grade my girlfriend and briana had a big fight my ex girlfriend had stole briana boyfriend, then at music class(which we have been having in a computer lab for reserch on music history in countrys) briana moved from her seat with some of her friends(their names are tori oliver and forgot whoelse ill add that later) to come sit next to me then started to flirt and she don't flirt with everyone, she is very outgoing and she has gotten in trouble for decking a few people who annoyed her but anyway I am not sure if she just doing this to make my ex pissed off or if she actually likes me(I think it is more of she actually likes me) but I am not to sure can someone help me. I am not good at noticing body language so can someone also tell me what to look for please answer as soon as possible.

Your post is really hard to understand.

Okay, so you were dating a girl, you two broke up, now her best friend is flirting with you?

The only way to know if she's interested or just being a jerk and trying to make your ex jealous, is to ask her. There's no sure way to determine body language and intention. Asking is the only way to know for sure.

Can you date your ex's best friend? Sure, if you don't care that it will cause problems between them.

Also, not sure why you mentioned that this girl is in trouble a lot. Is that something that interests you, a girl that's a trouble maker? Personally, I think a nice girl is better dating material, but you sound young, so I guess you'll have to live and learn.

Anyway, talk to her, ask her if she's interested, then make up your mind what you want to do about it.

If you think Brianna would make a good girlfriend then get to know her, maybe she likes you or maybe she doesn't... regardless, there is only one way to find out. Ask her!

Good Luck,
Javi

You CAN date your ex's gf's best friend but I know if that was me, I would be very upset and that would also put my best friend in a weird place because if she would choose the guy over me I would not only be disappointed, I would be furious.

So I sugest not.