I have similar issues. My closest friends have mental and/or chronic illness like me, so we're very fortunate to have found one another because we all understand one another. If one of us is not up for being social, then we get it.

I tend to keep to myself now because the relationships I develop tend to end with me being involved in obsessive behavior or conforming to their personality as a form of attachment. I do it so easily that I don't know who I am as an individual.

It is alot of effort to socialize or make new friends, particularly when you're working on your own situation. You have to "be on," and it can be exhausting.