2T4U/Jack/Shower/Confront both/Drop your towel and show them both what you think Aaron probably wanted to show Missy

Well, can't help it if Aaron wants to be a pussy. Perhaps you should lead him by example. You throw off your towel and hang it back up on the towel rack, prominently displaying your erection for them both to see. Aaron gives a gasp at the sight, but he seems to have still forgotten he is supposed to be getting out of his cloths as he is still the only one fully dressed and is making even less effort now to change that situation.

You want to make them comfortable with nudity and sex.

• Ask Aaron if his penis was doing this
• Invite them to shower with you
• Encourage Aaron that this isn't so bad.

You want to humiliate Aaron

• Verbally berate him
• Order him to leave
• Pounce on him and strip him

You want to fuck Missy in front of Aaron

• Teach her and don't pressure her too much
• Pressure her and take advantage of her
• Just fuck her without asking