It happens, I don't think that there's anything wrong with how you do relationships, in a way I kind of admire it. However, every relationship is different and has different needs, so it only makes sense that every one is going to function differently.
Also, I retract my adult comment. Apparently I was confused by media, given the amount of fuss they make on TV about turning 21, I always assumed that was the official 'coming of age' date, so I thought that was when people were officially adults. I was corrected on this. I now feel a little silly but oh well.