Ok, I hooked up with this girl a couple times. She's a bartender. We were keeping everything casual. Just hookup.

I find out she hooking up with another guy and now I feel weird hitting on her or flirting with her because I know it's not going to get me anywhere. She told me she only hooks up with one guy at a time.

Do I just keep flirting with her, kissing her randomly... Or just cease all flirting?

I admit I'm a little jealous...

What is the best way to handle this?