Have you ever been in love with someone who didn't love you back?

Not the way you mean....but it says more about how obsessively I protect my heart than about my taste in love interests. Not necessarily a good thing.

Have you ever stayed with someone who didn't love you?

No. Nor would I, I hope.

What do you think the relationship between sex and love?

Sex without love can be fun, but only if everyone involved is playing by the same rules and isn't looking for love way deep down. Sex with love is a life changing thing. They enhance each other in amazing ways. But you can have love without sex, and those situations develop their own, special modes of communication. That should muddy things up sufficiently

Have you ever had sex with an Ex.

Nope. And I can't imagine I ever will. I'm still friends with some ex's...but I don't think I can go back to that. I don't have a problem with sleeping with friends...but I have a lot of friends that wouldn't present the emotional complications my ex's would.