The thing is that I came across this idea of self-sabotaging some days ago. It happens to me a lot. In many things. Not only with people conections. When I have the possibility to.connect with them and I have to give more of myself than writing; for example in an online friend I'm unable to have a voice or a video chat. Irl, it's the same. I have to have many confidence with this person or have the proofs that this person is understanding and is not going to be judgemental. I tend to avoid this situations. I'm very good at first contact. I don't feel pressure but then, I'm afraid of being unliked or they discover my problems.
I don't know if it has to do with my perfectionism.