Raise the skirt

You were waiting for something to happen but were half expecting it to come from 'Jeremy'. You pull up your skirt to reveal your white hipster panties which he takes as an invitation, sitting down next to you a quickly reaching between your legs, which you spread wider open.

His fingers run between your thighs to the slightly moist panties, over them and against your outer lip, gently stroking your panties as you were through the cotton. You note a pronounced bulge in the front of his pants, and see Jeremy looking across with his hand back in his pants as he immediately turns his attention back to the screen.

Your guest runs his fingers up and then into your panties, squeezing down on your clit and then sliding a finger between your folds and into you. What for you to do though. Let him continue, maybe reach for his crotch for some mutual masturbation? Ask him to go down on you?