<human>: Give me the gist of the text in a nutshell

We've been dating for almost 5 months after being friends for a *very* long time. Mutual admiration finally led us together this year. As a matter of fact, she's my first gf in years - i really like her! She's wonderful and we compliment each other in a lot of ways, her family likes me and my family likes her and on the surface everything is hunky-dory.

The problem is we led (and still lead, though since we do a lot of stuff together it has converged slightly) very different lifestyles. She likes being in bed by 11 and waking up early to go run. I will beat the night into submission and sleep till noon. I love doing drugs (no habits though - quit smoking last year) and she's okay with my use but has never done anything besides drink a little and has little to no interest in exploring further. Blowjobs are also painfully absent - she just isn't as enthusiastic about them to make them sexy, and as a result I'm not as into it and so she doesn't like them. I thought I would be okay with this as we have lots of sex but now I really miss them.

Finally I know that I'm not ready to settle down in any sense - I'm not ready to not be single again, and knowing this makes it feel like I'm being disingenuous to myself and to her continuing the relationship like this. I love her and I want to not hurt her and a lot of things that I feel like I'm complaining about feel selfish, but I just don't think I'm ready as a person to really give her the relationship she deserves.
<bot>: Is this enough to break up with her? Part of me is chiding myself for being lazy but part of me really feels like the longer this goes on the worse it will be for the both of us.