<human>: She moved away for school and we made it work until she moved to California. She was going to finish the rest of her degree there to be closer to her father and I was supposed to move out there or she was supposed to move back once she had found a proper job.

Then, very much out of nowhere, she decided to end it. We were actually talking moving in together just days before that, and it was her idea for me to move out there. She even planned on where we could find affordable apartments. 

One night I couldn't get a hold of her at all, but that was fine as she regularly went out and so did I. She called me at 2 AM completely sober and ended it. Everything we had built for 6 years came to a crashing halt. 

I spent 3 months recovering with a ton of alcohol and good friends to get me by. Then I tried to get back out in the dating world. Starting with just talking to girls at bars, going on set-up dates with friends of friends, etc...

6 months after the break up I met a girl who I really hit it off with. We liked similar movies, music, and had a very similar sense of humor. That was all well and good for about 2 months then eventually failed due to my inability to open up. 

Now I've been in and out with different girls for a few months and just remain apathetic to the whole thing. I can't bring myself to care about anybody new ever since I lost my ex.

How do I move on and find someone new? How do I function normally in a relationship now? There's probably not an answer out there, but I've been depressed and just randomly throughout the day, almost every day, mental images of my ex and our relationship will come up.

I'm coming to the end of my rope as far as mental stability comes and it's starting to seem like I'll never function normally with a woman again.

Summarize the given text in a few sentences.
<bot>: How do you ever come to terms with losing someone who you thought, and were happy with, spending the rest of your life with? How do you move on from that?