I found a girlfriend at the age of 20 or 21, but I was completely not ready emotionally, clueless and it was a disaster that ended within a year, when I got dumped. Emotional fallout of that stuff lasted for many more years. It made me feel like the worst person ever.
I didn't know about Aspergers, depression, nothing. I just was doing everything "wrong", behaved "weirdly" in a restaurant, looked at my watch while we visited her friends... who liked to party... I awkwardly contorted myself to loud music pretending to have fun at places where she actually did...
5 years later I saw her on the street and just froze. It was a moment I was dreading everyday. Being seen and judged by her again.
She didn't recognize me initially, but I just kept standing there, unable to say a word, looking at her reflection in the store window, and she turned and looked at me with increasing intensity, and then I just jerked forward and stumbled into the store, to get away.
Since then I had 2 more girlfriends. I didn't make the same mistakes. I didn't get AS CLOSE, I got along with people better, I gave more than I took... and in the end I was the one who ended those relationships, but that didn't make the emotional impact any easier.
Most of my life is just these long, long periods of being alone. I just cannot sustain the impact of separation that follows attachment. Unlike NTs, I cannot allow myself to go into multitude of relationships with this easygoing attitude, without thinking, and then just walk out of the car explosion with a slight limp.
It's not worth it. It's too damaging to do often, and I still hope that the next relationship I find will actually last.
If I find it. Ever.