Do you love your gf/bf If you end up having sex with your ex?

A person in love would never do such a thing.

No, having relations with your ex means you are not over them and still have feelings for them.

Possible... but you dont deserve them. Real love is about commitment, trust and respect. Not sex and feelings. Grow up, set the bf or gf free. You got hard lessons to learn.

Maybe. We're complicated creatures. Once? Or every Thursday? I think the answer would differ with the circumstance.