How can I get through this pain?

I think that my boyfriend is cheating on me, or at least in the beginning stages of it. He assures me that nothing is going on but I am pretty sure there is.

I have to break up with him but the pain is more than I can bear. I love him so much—I can honestly say I’ve never loved anyone the way I love him. I can’t see through the pain. I have to let him go.

Please help me. I have no friends to turn to, I can’t turn to my family, and I can’t afford to pay a therapist. On top of this, I’ve been unemployed for over 2 years and haven’t been able to find a job. My financial burdens are killing me, and now because of this I am so severely depressed that I don’t even want to get out of bed and don’t even want to think about getting a job.

My heart literally feels as though there is a knife twisting around inside.