Accept

You want to make sure she understands what she's getting into. It's either that or the perspective of seeing your friend face to face in nude looking very tempting. The curtain lifts up slowly. You watch Agnes stare at your hard cock until your upper body gets revealed and she looks up seeing your face.

'Oh!' She flinches and then blushes.

'Hey Agnes.' You give her a hopeless look. She looks nervously to your right.

'Sam... we... we can't!'

She covers her boobs with one hand and her pubes with the other. You notice she keeps glancing at your boner although she tries to hide it. Looking at her without the mirror feels completely different. In a way you enjoy that adrenaline rush it gives you.

'We have to... What do we do?'

'Hmm... Can't you just like... jerk off for me?' It looks like an option. Her eyes beg you for mercy.