You are Clint Barton - Superhero name, Hawkeye. You and Natasha Romanoff have been friends for years (and you've been married for years). But one afternoon, after a particularly hard morning at work, you find yourself at Natasha's apartment having some beverages to relax when she admits that she's started to feel differently about you recently. You remind her that you're married but it only seems to turn her on more. She begins to insult your wife and teases you by admitting that she caught you masturbating over her years ago. You can't help but grow hard as you listen to her talk and watch as she slowly peels off her clothes, tempting you and teasing you with her amazing body. She eventually persuades you to release your aching cock. She's pleasantly surprised by its size and can't wait to feel it stretching her tight little pussy. She starts off open-legged, letting you slide in and out, stretching her more with each stroke until she decides that she wants to ride you. She rides you from the front and back, using a little blue vibrator on her clit and telling you how much your wife doesn't matter the whole time until she cums explosively over your huge cock. Feeling satisfied, she opens her legs back up to let you fuck her deep until you fill her up with your thick, hot seed and watch as it drips out of her used, wet cunt.