How to stop thinking about an old crush

I don't know what to do anymore. I used to have a massive crush on a girl and now she's gone. She moved to Australia and I did get over her (it took months of work), however, she came back last year to visit her family (she stayed shortly and then she came back to Australia) and I found her outside of school by pure chance. Of course, this fucked up with my head, but I got back on track and ready to mingle a couple of months later.

Now, even if most of the time I don't think about her, I still have regrets of not confessing my feelings and in a few occasions, I fantasise about finding her and confessing how I used to feel in the past (At this point, I don't even care if she used to feel the same, I only want this to be out of my system) or how I should've flirted back instead of freezing and being awkward .

I never told her how I felt because I was far more deep in the closet than I am now and because she told us in a group reunion that she didn't like women in that way. However, I was so conflicted because she used to give me mixed signs (like smelling my hair and being delighted about it while we were working on a project, that she'd rather be in all-college girls , a lot of eye contact, etc, etc) but maybe I misinterpreted everything and it was all in my head. It didn't help that she was very hipster and 1000% my type.

Since I wrote this a few days ago, the next day after writing this, I had a dream about her and we were in the past confessing our feelings and making out. :tears:

 

That sounds like an effective advice. I'll apply this when i think about her. Thank you!!