Too Good to be True...???

There is pessimistic saying, "If it's too good to be true, then it probably is."
Well since I have not always been so lucky with life, I have always believed that. Especially with men. I don't have high expectations for them. Men, whether it be boyfriends or my father, have always let me down in life. But now there is one person, that has met all my expectations, and not only that he has exceeded them. For me he has gone over and beyond all my expectations. He literally has been the first man, besides my papi, who has never disappointed me. So far so good. Every day I see him i continue to fall more in love with him. The one thing I swore I would never do again. But of course all this scares me and its almost like i refuse to believe that its as good as it seems. So, i always try to find things that aren't there, to prove to myself that he is just like every other guy. I keep proving myself wrong over and over again. Lately I've been doing alot of arguing and for what? So that i lose an amazing guy? Because that is what im doing, pushing him away until i lose him for good. I need to stop doubting him and myself. I need to believe in him. He's told me "When you find someone good, you treat them good because you want to hold onto them." That is true. He has been more to me than any other man. I know this sounds corny and cliche, but its all very true. I need to hold onto this man and treat him the way that he deserves to be treated. He deserves someone who will love him, and care about him and trust him. I want to be that someone. But i do need to get my act together, otherwise i WILL lose him.
I love you. You are everything to me. I would do anything to not lose you. I want to have you by my side. Just give me a little time. Please don't give up on us, our relationship is worth it, I promise.