<human>: Can you summarize the given text in a few sentences?

I have been friends with Brian for 3 years, and we've become best friends over that time. He's the one I tell everything to and we're incredibly close. 

I had only ever thought of him as a friend, but I found out that he liked me and after some consideration, I decided to give a relationship a chance because there was definitely some chemistry there. It's been a few months since we "officially" started going out, and overall, it's been absolutely incredible. He's so caring and loving, and because we knew each other so well already, taking things the next level has been amazing. And the sex is awesome as well. I have never felt so loved and wanted. 

But. He is about 4 inches shorter than me and also weighs about 20 pounds less. I am 5'5 and am at a normal weight, but he's quite short and very thin. I like tall guys, so I knew this might be an issue, but I still wanted to try out the relationship because I knew he cared for me so much. I feel uncomfortable being around other people with him, because I feel like people are always looking at us and thinking that our heights aren't compatible. On a personal level, I like the security and safe feeling that a taller guy gives. 

And this, along with some of my own issues, makes me unable to fully commit. Don't get me wrong -  I would never cheat or anything - but I find myself being jealous of girls with taller boyfriends and I want that. My friends tell me that this is something that I should just 'get over,' but I can't seem to do so because it's something I really care about in men. I know it's superficial, but what can I do about my preferences? The height thing makes me less attracted to him, and I don't feel the same way about him that I did with the previous bf. And I'm at a point in my life where I'm not sure if I want a serious relationship or not. 

Should I stay with him and try to get over the height issue, or should I tell him that I prefer being friends?
<bot>: Boyfriend is amazing and loves me so much, but he is a lot shorter and thinner than me. Should I break up with him?