I get that. The person I am in love with is unavailable, so I haven't gone out with anyone for 3 years, and I have no plans to do so in the future because I love him too much and that hasn't faded a bit since 2010 (getting plenty of therapy for that). Guys are usually there for a bit and then hurt you in the end anyway, and it's like having your heart ripped out.
My friends have usually let me down in some way, and right now I have had to push most of them away (and my family, too) since they would never understand my depression/anxiety.
My bf has mental issues of his own, but has completely cut me off out of the blue (after 17 years) for no reason (well, nothing I did) and won't respond to phone, text, or email over the last month+. I was letting him work it out, but now I am angry since I asked and begged him for 5 minutes to please let me know what was going on, and I said that I missed him...and got nothing back.
It is so hard to trust people. Most weeks I might talk to maybe this one friend I have from where I used to work but otherwise just my Ts.
I gave up on spending time with people...it's not worth investing time and energy when they will only hurt you. I am sorry you are experiencing something similar. People can really, really suck.