15-20 pounds I very much doubt is the weight the OP is talking about with his girl, and right now,. she is his and he is hers even if he doesn’t want it, in her mind, they are an item and it’s only a matter of persistence before he gives in to her demands…
Dude, run away as fast as humanly possible, I was trying to be subtle about it before, but let this person’s experience be a lesson to learn for both of us. You are in your 20’s, to correct one of the previous threads, I’m the one that is 42. I’ve been there done that, rescuing one that was 5’ 4", 250 pounds, and was emotionally bullied into the relationship to a point, I was taken advantage of when we initially got together due to a death of a dear friend which also concided with losing my job and having to address my friends business matters pro bono afterwards to boot, for he was my boss as well. so, kind of in a low spot in my life and she took full advantage of it as well as the very long dry spell I had not even remotely dating anyone for a decade prior as well.
You are essentially looking at the thresh hold of what I faced back then, and it took me a decade to finally be free from that one, it doesn’t have to be for you. Do NOT do it, just don’t give it a second thought, leave now, heal, and keep your options open, for I am sure you will find someone more compatible for you locally or through other means, you can hardly do worse buddy! This luvy duvy stuff does eventually wear off, you eventually have to be into each other, or away, entirely upon each of your merits, and she’s starting this one out in the same manner as what I experienced, and she’s doing it in a text book manner.
With what the OP mentioned along being left with the left overs, he’s darn right, why should he have to pick up the pieces for someone elses mistakes, if he was with her from the beginning and her body started to go downhill, that’s entirely another matter, it’s about having some standards, and to be honest, losing some weight is not an impossible feat to accomplish what so ever…!!!
With the poster stating that we must have some problem in the dating scene, in his case, he’s not showing confidence on the local scene, and probably hasn’t established a working game plan for his life and carear, not knowing that gals his age don’t look at what we have as much as what our potential is. On my end, I was subject to that overbearing gal that was a mistake for me from the beginning, but I have this ruthless loyal streak, so even if I"m being treated badly and entirely being taken advantage of, my fidelity remains in tact regardless, it’s just how I’m wired and it’s obviously not the case for too many men, or women for that matter…