I haven't really been in a serious relationship but will add my 2 cents since it seems relevant. About the girls being boring thing, I don't think that it's just that girls are boring but most people are boring - sort of just how I feel that I don't like 95% of people in general. When you meet the right one I think things will just click just the way it has with all of my best friends. With all of my really good friends we never had to "warm up" to each other it was pretty instant from the time we first met. Relationships tend to form the same way just in different senses with the two most important ones being friendships and romantic relationships.
My problem is just that with touring, traveling, and in general wanting to live life unrestrained while being able to lose myself then find myself again I've never managed to have a serious girlfriend. Some people will say it's because I move around a lot but I beg to differ because I don't think staying one place to find a girl really matters - you could meet anywhere and it would be instantaneous. In general I give it the rule of 3 - 3 dates, then 3 times having sex but I'm not saying I wait until the 3rd date to have sex because we're adults and whenever it happens it happens. 1st date you get to know each other, 2nd date you see where you're at, and 3rd date you're either still interested or not. Same thing with sex really - 1st time you're getting to know each other, 2nd time you're finding the groove, then 3rd time it's either good or it's not. I'm almost 25 so one night stands along with being promiscuous are still fun and all but not in the same way as when I was 18. Knowing what I know now, if I come across a girl who's super rad in all ways I'd definitely try to hang on to her.