My buddy dated this girl for the entire sophomore year. I knew the girl before he did and he knows i thought she was hot before they started dating They broke up over the summer and it was a rough breakup. She pretty much broke his heart i mean he was shaken up for a while but hes moved on. He now has a new girlfriend that hes been dating for a month or two. They hang out every weekend.

This girl is a dime. We talked for the first time in a while last friday at a party and both wanted to hook up. I didnt make a final move though because of my buddy. Weve been texting since then and shes down.

What's the right thing to do here?

TLDR: One of my good friends had a rough breakup with girl and was upset for a while. Has a new girlfriend, and now his ex who is hot wants to hook up with me. ????