<human>: Can you provide a brief rundown of the text in within 3 sentences?

I need help plain and simple. My girlfriend has been a strong individual our whole relationship. I've bombarded her with jealousy issues (she's never cheated on me, but she went behind my back and was talking to a guy she told me she stopped talking to), mommy and daddy issues, personal issues, and she's stuck through it and helped me better than I could ever ask for. I'm going to be blunt and say I don't deserve her one bit. She could do infinitely better finding a bum on the side of the road. With that being said I always try to be a great boyfriend, we constantly do what she wants to do 24/7. I always agree to do anything and everything I can with her because I love being around her she's like my sun and stars. She asks me what I want to do, I ask her what she wants back. I want nothing in the world than to make this girl as happy as she can be. 

The problem is, when we start talking about issues we've had, I take everything way too personal, and I wind up trying to or actually leaving the conversation completely. I've been doing better at sticking around and talking out problems, but it's not helping. I feel like I permanently scared this beautiful girl and I don't think it can be reversed. What can I do to make myself a stronger person, because she needs this from me. She's always been the strong one, she's always been the fixer, but just tonight she said she wanted somebody "more manly" than me (she said not to put it blunt but more manly).
<bot>: Constantly trying to run away from problems, having a hard time fixing them, what can I do to help myself become a stronger person?