Okay... another reality check is in order. You didn't even know her so any "feelings" you had about her cannot be relied on as being anything other then simple infatuation and actually more intense then they actually are because your ego took a hit.
You met her in November for goodness sakes and you had, what, three dates before she said she wasn't feeling a connection and then another one when she hoovered you back just to eat you up in infatuation only to (I shitt you not) shit you back out yet again.
She's a c*nt and why you'd think you have anything true feelings for someone who's such a C, is beyond me.
Sorry... Harsh again, I know but, honey you have to look at this with the logical part of your brain and not the misdirected emotional response to someone who is such a twat.
You're handling it well but these wistful thoughts of yours, well no, try to stop having them. 
Good luck in your next adventure in dating and if you're going to do online dating then DO NOT go back to Tinder.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion