I agree with bebop. You two are in love with each other. The things you say about her (besides the quotes you each say "about" each other) are very flattering and respectful, except for the part about putting down the girls you date. She is meaning you could do better. She doesn't need to go so far as to make them look stupid. If you two could get to the point of looking at each other and really SEEING the other person for who you are today and not that person back in the 3rd grade, it might be amazing what you see. I am 5'6.5" and am considered slightly above average height. With heels, I tower. Do try going on a date. At least try it. No sex. That would be too preliminary. See if you can have an adult relationship instead of a brother/sister relationship.

I'll share a secret with you. I used to get sarcastic around guys. It was because I was smart. I thought they were stupid most of the time. Then I got more self-confidence and didn't need to do that anymore.