The most important part of your post is that you are here!
My original weight was similar to yours, I dropped over 100lbs and then gained 60lbs back in less than 6 months. I had some personal losses and wanted to give up on everything (except eating, of course).
Somehow, some way...I got a grip before I gained it all back (and then some, probably). I didn't start losing weight right away but I stopped the gaining of more. That's what you are doing right now! Trust me, I know that feeling of gaining 30 and feeling like 300.
I had to stop running too, it was too hard carrying this all around. It sounds so weird but the last time I was this weight, I felt light like a feather. Not this time though.
In your post you wrote that you are back at square one. But you aren't.
You are so much further along than that!! You had a slight regain and you are still maintaining a huge loss! Don't be so hard on yourself, celebrate that!
I'm excited for your future with your boyfriend. And soon a wedding to plan!
We will be here for you. I try to take my weight loss 10lbs at a time and then it seems to be less overwhelming. We have good days and bad days. The only important thing is to have more good days, whether exercising or eating or both.
Nothing about this is easy, we all know that. But we proved to ourselves that we've done it before and we can do it again.
I always try to remember the quote "There is someone wishing to be where you are right now." When I was in the 300s, I wanted to be in the 200s so badly. I never thought I'd be, I thought I was destined to be almost 350lbs for the rest of my life.
I can't wait to read your updates, you are going to do great. I just know it.