Can I still establish a relationship?

I am turning 28 this year and I am still lonely, depressed, and confused as I was when I was 18.

I learned I was an aspie when I was 18 which was also when the clinical depression I've been suffering from really kicked in. A big part of the depression comes from not having a girlfriend and reading that many aspies remain single for life didn't help me. There are other things that get me down but being single in a world where it seems everyone has coupled in really destroys me more than anything.

I've tried to do things to get out of my situation. I changed my clothing style (T-shirts to casual stuff like polo and button ups but that didn't change anything), going to a gym (Kept myself from getting obese but I am still overweight and have underdeveloped muscles. My genetics probably suck), went to social events even where I didn't feel comfortable (Church and bible study especially), and went to college (No different than high school socially and I got bad grades in courses that I thought would be my niche). I have banged my head against a wall so much that I wonder why the pain and stress hasn't killed me.

There's more to my situation but I can only write/text so much before I get overwhelmed. Is there any hope for me or should I just give up?