Would you girls find a 6.4ft guy attractive?? Advice...?

I just want to know one thing. I am a tall (6.4) but good looking guy, funny, in good shape, but can't seem to find a nice mature girl out in this world for some reason. I had a gf, she broke my heart completely after cheating on me and now... I never have used a girl for only, i was always the nice guy, treating every girl with respect, but now i am thinking..... is this a bad trait?? Should i be more aggressive and be more outgoing and promiscuous?? Seems like the girls always go for the guys that are Tough or hot shots, even if i am taller and built like bricks compared to their scrawny es. What you girls think?? Am i doing something wrong, what is the right attitude to go out into the world with to meet a nice girl? And i kinda honestly do feel pretty bad being that i am 24 and have only been with one girl () only... wow, im way different than the rest of the population you can see :\ HELP!!!!!