I sort of went through the same thing, resolved after 8th grade to do a total self-rejuvanation: get a tan, work out a bit, change my hair-style, the whole bit. The only thing i ended up doing was switching to boxers and getting contacts instead of glasses (though i've quite enjoyed both of those changes)
The girlfriend issue isn't one to stress about. If you try and force yourself into a relationship, you're just going to find yourself doing a helluva lot of work for little to no tangible benefit. Dating is of course quite distinct, something you can do more easily for fun, but i'm not the one to really go to for advice (i'm actually in the same boat as you, two years out of high-school), i'm just going off of observation.
Monster Hunter: pissing me off since 2010.