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

I am in a fantastic relationship and because of how the relationship started, I have always had doubts about if I was the only one in her life and if she was truly into me. Even as I write this I feel ridiculous because I know with my brain that our love is real but I have this nagging fear that it isn't. We started as more as friends with benefits and at the time I never knew if I was the only one (and she with me).

Now, we are in a committed and public relationship that is by far the best thing I have ever had. She has never once given me reason to think there is someone else or that she is not still madly in love with me, but it is like my heart just can't accept that what is happening is real and as good as it seems. We have discussed this several times and she feels similarly. 

My goal for this post is to seek out some help in retraining my brain to stop looking for the "ahhhh, I knew this wasn't real" moment and just accept it and be happy. I am often analyzing things trying to figure out if there is someone else, or if she is lying to me. And like I said, never once have I found anything.

Some background: We've been in a relationship of one sort or another two years and committed to each other for about 6 months. I have dated a decent number of people and been married previously, some okay relationships and some horrible. This one is just unimaginably good and doesn't compare to what I have known previously.
<bot>: I am in a relationship with a beautiful and amazing woman but am having a hard time believing it is real. I need some advice on how to accept it and just enjoy it!