He wants to "bang" you? Stay classy, San Diego. Yes. It's entirely physical. He is absolutely just trying to sleep with you. Are you really going to fall for a line like, "It'll be different"? Of course it'll be different-- he'll be sleeping with someone who is not his girlfriend. That's his way of getting you to sleep with him, by making you think that you are more special than the girlfriend. Except that you're not. If he still had feelings for you that manifested above the waist, he would break up with the girlfriend and get back together with you.

This is what your shady ex is thinking right now: "Huh. [Insert your name here] just posted a new photo on Facebook. Man, she looks good. It's a shame we never slept together. I should text her and see how she's doing. She still has feelings for me. I bet she'd sleep with me. And if not, I still have my girlfriend. Nice, bro! [high fives self]."

Look: I get that you still have feelings for this guy. (Otherwise, why aren't you telling him to f-- off and never speak to you again?) We've all been there. And it's a shame that, for whatever reason, you never got to sleep with your ex. But do you really want your first time with this guy to be behind his girlfriend's back? You deserve better than that.

All signs point to your ex using you for sex. He clearly has no interest in getting back together with you. Instead of breaking up with his girlfriend and trying to rekindle something with you, he just wants to sleep with you and put you in the terrible position of being the other woman. Why didn't he want to sleep with you when you were together? He's curious about what it would be like to sleep with you, and is looking to cheat. Clearly this is a case of too little too late. It's time you to act like En Vogue and let him that he's never gonna get your lovin'.