<human>: Could you distill the essence of the text into 1-3 sentences?

First off I'd like to give some background. My current relationship isn't the only time I've had doubts, it seems to be a common theme in all my relationships. I've been with my current girlfriend for over 2 years. Over this time I have more and more realised that she is jealous and controlling. Despite my reassurances, it only seems to get worse and I have become further distanced by this due to feeling like I can't even make conversation with females. This certainly contributes to doubt.

The feelings of doubt started when we became long distance around a year ago. When I'm with her the feelings seem dampened, and are more noticeable when I'm not with her. When we're apart I feel less compelled to even ring her.

I believe I've become increasingly unhappy and I go to bed at night imagining situations of a break up. I've also found myself noticing other girls more. I want to do what's right for her, as she deserves better than doubt.

To complicate matters further I suffer from mental health problems. She understands, accepts and supports this. I worry that if we break up my symptoms may worsen and further worry that future girls wouldn't understand.

To complicate matters even further, I broke up with her after 3 months for similar reasons and we wound up back together due to our proximity. I regret this.

I know that I don't want to take this relationship to levels of, for example, moving in, but I can't distinguish feelings of unhappiness from symptoms and I can't distinguish feelings of doubt from what is true. I need someone to talk to but my friends don't know of my mental problems, and I think it's best that way.
<bot>: Gf of 2 years, doubts since long distance began. Broke up early in our relationship and got back together. What do I do?