The strip is written by Josh Lesnick, who also runs Slipshine (definitely NSFW), a drawn-porn-portal "for fans of comics that are sexy, fun, and perhaps a bit silly".Girly starts here, and the latest storyline kicks off here.
I was inspired to post here by the last few installments, but if I were starting anew, I'd be inclined to check out the archives.
If you found the low level romance of Girly a bit tame - and if you like your webcomics more scifi and less sorcerous - you might also want to check out Curvy (NSFW).
Another strip with heavy gamer influences and a hefty dose of hallucinomorphic whimsy, Curvy follows the adventures of Anaïs as she discovers our world is not alone, or indeed safe. I haven't read as much yet, but what I have read is erotic, weird and strangely innocent.
Curvy is by Sylvan Migdal, the author of Where The Typos Og, but don't expect it to push the same buttons; this is quite a different strip.