Yeeeeeaaah, don't do anything of what @PervertOldMan said XD
You wanna attract readers, yes, but you also don't want to be click-bait. Because if your story is not what the title and thumbnail says it is, you'll only make people not wanna read it. They will go in, thinking it's something else (aka, something "perverted" or whatever), and get upset when it's not. Dunno if you'd want those type of readers anyhow. Just be careful doing stuff like click-bait.
Unless you're trying to go for satire or parody.
But honestly, I'd do a title that's related to the main plot at hand. Like sure, you're doing a Girls Romance comic -- but what's the plot? Why are they falling in love? What is the one common thing they have that drawn them together? Or rather, why are they so different?
I'd steer away from using slang and kinda focus on the personalities of your characters.
So you mentioned one is a biker and another is a mean girl (I see her as some fashionista for some reason). But their outward appearances are not their insides. How about basing your title on that? Some like:
Wheels and Heels
Leather and Fur
She Sees Through Me