Hmm, sounds a lot like what I've been through in my last relationship. Unfortunately, she broke up with me about a month ago after being together for over 4 years. And yeah, it all kinda sounded like you described it, milkmilk: we were in love, everything worked out fine, we got along perfectly, except for the question if we really were compatible.
We also had our personality differences (like you: the sleeping, the "different lifestyles", ...), but personally, that didn't really bother me; I always found a way with coping her needs and making sure mine didn't mess things up for her.
But yeah, apparently she didn't want to go any further with this. I still feel like shit about it, and I guess this isn't really helpful for you as well. Just wanted to, you know, share the info and experience. Maybe it helps in "making up your minds" or something.
