I'm playing with myself, watching porn and riding my fingers, rubbing and grinding on them, after about 4 minutes as I'm about to cum I see you. But it's too late - I can't stop myself - so you watch me cum as I'm embarrassed and mortified. it's implied that you're my roommate. You're super hard even though I'm embarassed so even though I'm feeling a bit shy, I take it out for you. I suck you off and you cum in my mouth (implied). I start riding you, all shyness gone now, from behind and then cowgirl and we cum together as you fill me once again. I guess I'm glad you walked in on me after all.