BuggyBear81, I'm giving you a hug.

I get it, I really do.
I'm 54. I had a ton of boyfriends when I was young, always serious and offering marriage, but I stayed single till age 27. Got married to the wrong guy, got divorced after way too many years with him, stayed single for 8 years, found The One, was widowed after only 6 years, was single for nearly 3 years, got in a relationship a year and a half ago and got dumped 6 months ago (not related to weight). Here's what I have learned, and I hope it helps you some:
Being single is far preferable to being in a bad relationship. Being in a good relationship is far preferable to being single.
I miss having someone to share a laugh with. I miss having someone to snuggle up to in bed or who will rub my shoulders, or I will happily rub theirs. I miss sharing a knowing glance across a room at a party. I miss waiting to hear the sound of his truck pulling into the drive. I miss having someone to tussle with, tell my bad jokes to and share my meals. I miss dancing.
I don't miss having to cook all the time or cooking the wrong things because I know he'll love them, even though they're terrible for me. (But that was my fault, not theirs!)
On the practical side, I miss having someone to help with chores. I miss sharing my home with someone who knows how to fix the toilet. I hate being the only one who runs errands.
I was in deep with my last relationship and even though there were issues, he was a good man in many ways and I miss him terribly. That said, I wouldn't take him back if he showed up on the doorstep and begged. But I know better than to give up on love -- just on love with HIM.
Peruse your local Meetup groups. Join a few things -- book reading clubs, gardening clubs, hiking clubs or special interest clubs. If you really want to meet men, learn to shoot. Volunteer for something if you can. Put the word out to family and friends that if they know someone suitable, they'd be welcome to provide an introduction. Go to EVERYTHING you're invited to, even if you'd rather not: Potlucks, family gatherings, weddings, whatever comes up. Take the time to look good and feel good about yourself when you go. Put yourself out there! You'll be amazed how many people you meet, and you NEVER know when you might meet your next Special Someone. It might be through a chance meeting, or through a friend of a friend, or just someone you bump into while out and about. And if nothing else, it will give you something to do instead of worrying about your next relationship.

Be picky, never be desperate, and enjoy your life just as it is -- trust me; it could be worse.
I hope there is something of help for you here. I know someone special is looking for you right now. Another hug for the road:
Best, Rae