Pls I need a love advice...

Yeah, don't bother.
I'm a romantic, so I'd love to say 'just go for it! you miss 100% of the chances you don't take!'

But in this case, there are too many reasons not to.

Long-distance relationships don't usually work out in the first place, and that's with most LDR's being in the next state, not country. You also seem wishy-washy about your feelings, uncertain. To involve anyone in a serious relationship when you're that unsure about your feelings is pretty cruel. Your behaviour has been really inconsistent too, not liking her but wanting to improve the relationship is unusual. Why would you want a relationship with someone you don't like?

You've also already been through the rejection process and she would definitely have moved on. If she hadn't, it would be difficult for her to be around you.

The final nail in the coffin is that you've been in a position where you confessed to her in order to get rejected. Knowing that she had previously seen you romantically. That was really, really not ok of you. It's kind of a miracle she stuck around after that. Playing with people's emotions isn't a joke. You hurt people that way, and sometimes you hurt them in a way they can't recover from.

It doesn't seem like this girl is the type to be okay fucking around and walking away. But if she was, I'd say just ask her to fuck you. If your friends are sexually open, fucking your friends is fine. I can't do it but I know others who can.

But in this case: keep it to yourself and move on. I can't see a way this kind of relationship would work out.