I think my ex used me last night
What do you mean when you say "used you"?
I mean she used it for sex. She likes to have sex. So I'll give her the sex so she keep hanging out with me
It's understandable to still have feelings for an ex, but its good to move on if you feel as if they only want you around some of the time. Otherwise you'll be stuck in the same cycle and will never truly get over them.
I can't move on right now.
I know that it is hard, but I think that you can do it. It is good to move on from your ex's, especially when they might just be using you.