Kristen and Kevin waste little time, as they don't even say hello before embracing. From your perspective, you don't notice an immediate difference as Kristen's panties, although she turns around a bit and eventually slams against a wall in what you assume is a fit of passion.
It's only a few seconds before Kristen's pussy starts getting wet. As her panties, it's a fascinating experience. At first, you don't even know what's happening, only that something is different, and soon you realize that it's getting hotter in her pants. You're prepared for the advent of a few beads of sweat, but her pussy becomes moist and then legitimately wet. Soon her pussy juice is soaking through you. It's a strange feeling to be wet, especially when you know that you're drowning in a college girl's love juice. You're still mostly dry, of course, but within a few minutes of Kristen's arrival at Kevin's house, your crotch area is completely wet.
You love it. You love experiencing Kristen's passion in full force and in the most intimate way. This is what you wanted when you turned into a pair of panties: to become a part of Kristen's lust in a way that no one else will ever experience, almost as if she, her pussy, and you had all become one shared moment of passion. You hope it never stops.
And it doesn't. Kristen and her lover must be experts at foreplay, because the two of them are going at it for a long time. You enjoy the twists and turns from your perspective, as Kristen ends up lying on the couch. You can sort of see what's going on from under Kristen's skirt, which shifts and twists a lot during the festivities too, but mostly it's legs and the floor (and then the couch). You're perfectly content to remain concentrated on Kristen's soaking wet pussy.
Eventually, you feel a hand on you.