I'm angry at many people in general lately. I used to believe in loyalty (I still do), put great faith in friendships, and in being a good person. I supported family members (some of whom are abominable people) because of their troubled pasts, but they still don't care about me and see me as some kind of tool for them to use or are just outright disrespectful; friendships I spend years cultivating just fall away because the other people can't be bothered to stay in touch - even with all the "amazing new technology" that makes staying in touch as easy as breathing... and relationships - whew. How I helped those people when no-one else would, only for them to turn around and not have 5 minutes to listen to my issues, or even just to "be there" for me as a supportive or romantic figure. To be loved by someone the way they want or think they should love isn't necessarily to be loved in a way that is at all good for you. It's been a long and painful lesson to realize NONE of these people are good for me. They actually harm my health with how stressful they make life.
So yeah, I understand the distrust, and anger. I don't feel any more that I will find the time or the energy to bother again getting close to someone in the way that I require - i.e. a careful process of establishing trust. Nobody's ever managed to "screw me over", but I'm wary of it all the same and just feel like my last relationships were wasted time and tears. Only to realize perhaps I am better off alone, even though I'd rather not be.
To deal with it, well, I've set myself some aspirations to achieve. One thing I always wanted to do which relationships always prevented was to go live in a certain country, learn the language fluently, and experience it properly, as a working person, not a tourist. Perhaps stay for life if I like it (there's nothing keeping me here where I am, that's for sure). Continue my art business over there while doing a different sort of job - maybe teaching, for a change; learn a new culture, traditions, change my name... start over with a different life. Sounds big but I'm already on the road, getting my qualification that'll allow me to do it. I'm not all that young, either, but where there's a will there's a way. Even if I don't manage it I need the goal.
I find with so much to do and look forward to in that way, I'm not bothered about being by myself. Maybe I'll meet someone out there who'll be different. But hopefully I'll be content enough following my dream and not needing someone.
So, maybe take your mind off it by setting a goal. Do something you always wanted to do. Why not? Really ask it. Why not. And why does happiness have to revolve around a romantic partner. There is a lot of life to be lived without being joined at the hip. I notice that I found romantic partners in life when I was never really looking for them. I was busy doing other things, and they found me then. So take care of the other things you need and they'll likely take care of you.