It's really hard when someone doesn't feel the same and our mind will find bunch of reasons to trick us that's she actually want us but she just need little persuasion but if that's the case do you really need someone who is unsure of their feelings and desires. But going with what "heart desires" and especially this "gut feeling that you're soulmates" can bring us more suffering
I went through something similar about ten years ago but somewhat different in that it was more obvious the 'love bite' wasn't real. But I also couldn't get away from her as we attended the same meetings.
First order of business is to separate the real from the unreal. If you can do that, then what you have, painful as it is, is an opportunity like no other to do some Work. You can begin to see how strong feelings coopt your thinking as it's happening. At least, that's how it worked for me.
You started this thread because you're in pain and you want relief. Unfortunately, it takes time. Much longer than I would have liked, but I realized I could make good use of the pain. So, I know it's possible.
The 'love bite' will pass. The pain of your reckless actions throughout this ordeal will be with you much longer.
Something to keep in mind.