I think that this song is meant to be about a love triangle. See there's this guy who's with the "pretty girl" (Girl A) in public but is cheating on her with another girl (Girl B). The song is about how the guy is trying to tell Girl A about what he's done, as Girl B laments the fact that she can't just let the guy go because she's too in love with him and the way he makes her feel (and kisses her :p). That's just my interpretation, but I'd like to think it makes a little sense.
I think that this song is meant to be about a love triangle. See there's this guy who's with the "pretty girl" (Girl A) in public but is cheating on her with another girl (Girl B). The song is about how the guy is trying to tell Girl A about what he's done, as Girl B laments the fact that she can't just let the guy go because she's too in love with him and the way he makes her feel (and kisses her :p). That's just my interpretation, but I'd like to think it makes a little sense.