Being Shiny, The World's Most Troubled Trophy Girlfiend

September has been a busy month.  I don't know what exactly I've been busy with, but it's been taking up all of my time.
It's probably been busy because of the boyyyyyyfriendddddd.  I'm pretty much just amazed that we're still together.  That he still likes me and doesn't think I'm a total wacko is magic-carpet-ride level amazing.  Having him as a boyfriend has been kind of like living in a movie.  Of course he has his flaws, but 90% of the time he literally treats me like a long-lost princess, and I couldn't be more grateful.
But I feel like I'm just waiting for the other shoe to drop.  Like, he's going to realize that I'm too demanding and totally not worth it, at any second.  When will I stop being the shiny new trophy?

Not only that, but his short, itty-bitty list of flaws is slowly diminishing as he decides to make life changes for me.  BE AWARE:  I did not ask for any of these changes, they are his own personal goals that I just happen to support.  Just wanted to clear that up before I got some major judgement from the peanut gallery.
Baby list of flaws:
A smoker,
Stoner (like the wake and bake, eat and bake, work and bake, drive and bake, bake and bake kind),
Living with a friend's family,
Unreliable car,
Low-level job (by this I mean that he can't really get much higher in the management than he already is, and it's not his dream job.  Not that he knows what his dream job is, haha),
Low self esteem

He's cut back on smoking (at least when I'm around, which is good enough for me since he's Mr. Two-Packs-A-Day), he's quitting pot for a while, and he's saving up for a car and his own place (probably with all that pot money he now has leftover).  He's also considering technical school.
I could list my flaws for years and years and years.  Basically infinity plus one.  And this guy still thinks I'm too hot to roam around college because I'll get hit on.  More like hit by...a giant truck.

To be honest, when we first got together, I was mostly just infatuated with how much he liked me.  It was a rush to be admired so much, and then to be treated so well, as if it were a natural everyday thing.  But now I"m in love with how willing he is to change and be there for me.  Like he's not just going to be the pillars on my porch, he's also going to be the walls in my house.  And possibly the roof.
How do I repay that?  How do I accept that?
What would I do if that went away?

Shit, even when things in life work out the good has consequences.  What's with that?