Insecure boyfriend has me feeling lost and hurt
Before I begin, I'm 25 yrs old, full-time single mother to a beautiful 2 yr old girl, full-time student, and full-time employee. I've been with my boyfriend for almost 2 years. He went through a bad divorce and I was with him during the last of it. He has a son that's turning 4, so we both know about parenting. I met my boyfriend at my workplace, I work on the 2nd floor and he works on the first floor. The beginning of our relationship was great until the jealousy, insecurity, and trust issues began. He often accuses me of cheating on him with one of our coworkers. Our coworker when I first came into the company did hit on me but I never spoke to him outside of work, met him anywhere, NOTHING. After he hit on me I felt really uncomfortable. My boyfriend and our coworker were single bachelor's that used to hang out and party, play basketball, and so on. As soon as I came in the picture the friendship ended, no clue why. As time went on my boyfriend began accusing me of cheating with our coworker. I have never even had the thought to be with another man. I love my boyfriend so much and i've done everything to prove how wrong his accusations are. I've recently even took a lie detector test and of course I passed but he didn't think the test was accurate because the examiner looked like a conartist. So I have agreed to go take another test and he can choose the place or examiner but now he chooses not to. I go to a private university and anyone that has gone to college knows that reception is bad in the classrooms. Yesterday while I was in class he called me a few times, but I can't answer or even get up and walk out of class, it's not a community college, and not all the calls came in. So he accused me of being on the other line. I was in class and as soon as I got out I called and he started insulting me, calling me names, calling me a hoe...etc.
He constantly accuses me of being on the phone when i'm not and of cheating. I have never been unfaithful at all or even thought about it. He constantly breaks up with me because he says his gut feelings and instincts are very strong and he thinks i've cheated. I feel so emotionally drained. I cry everyday more than you can imagine.
One reason he believes I have been unfaithful is because I've had bruises on my thighs and I have no idea how I get them but he says its "fingerprints", meaning another man has left his fingerprints on my body....this is all overwhelming. I don't know where the bruises came from BUT I DO KNOW NO OTHER MAN HAS TOUCHED ME AT ALL. I've done everything to prove my loyalty, respect, honesty, faithfulness, everything to him.
I'm to the point that I'm so sad. I have a beautiful daughter to live for and I'm weak right now.
He's walked in and out of my life for the past year for his own reasons which has no reasoning. Its so hurtful being accused by the one you love for something that has never happened. I'm devastated :( He constantly breaks up with me, we get back together and he's great for 2 days and starts again with this emotionally draining drama.
Should I keep trying to prove my innocence? How do I get back up on my feet?
UPDATE:
As soon as I got off of work I did call him. We broke up again yesterday over him thinking I was on the other line while I was in class. I tried talking to him so I can get closure and it didn't work. He did listen to me but as soon as his thoughts of me being unfaithful go into play he started being rude. I truly find it so hard to get away from. For some reason I want him to see that I've never done anything. He has even gotten to the point to say that everyone at work already knows about my secret affair, at that point I want to laugh but I get so angry that I cry so much. How and why would he possibly think I had any sexual relations with a coworker? I am trying to find another job because I can't stand knowing that we are in the same building. I realize I'm losing myself in all his thoughts.
I'm stuck on the great qualities he has shown me, he's a great family man, father, hard worker, very affectionate, but why does he lose control when it comes to me?