Why can't he hook up with you, too? His flirting with the other girl was apparently more fruitful. You need to catch up!

Make sure he knows you "Like" him. He cannot read your mind and will continue to flirt with anyone untill he gets very clear direction. Clear would be setting a dinner date, not "I looked at him".

So he flirted with you, giving you very clear signals he was interested in you. And how did you return that? Cause if you were too subtle or played too hard to be gotten, another girl clearly didn't.

Psst... flirting is not an engagement ring. Some people flirt with everyone. Some people come off as flirty because they are outgoing and nice and it's not actually flirting. Use your words.

I think you friends are good friends trying to save you from being hurt further.