Get out!

You play with her a little longer and then move one hand from her breast to her back, pushing her forward. You push her hips back using the hand at her pussy until she slides her rear past your hard member. You switch from her pussy to your penis and guide it into her. She turns around realizing your intention. You push her forward so she has to put her hands out in a splash. She's now on her hands and knees.

And then you understood that you are going to **** your best friend, disgusted to yourself you jump out from the bathtub, leaving confused Courtney alone. "What the fuck was that!?" She asks with anger and you answer immediately and emotionally "Shit! Shit! Shit! I almost **** you!" Overfilled with shame you basically ran away from the bathroom to your room, to dress yourself and decide what to do next, how to excuse yourself for what you planned to do and how to save your friendship.

Few minutes later Courtney entered your room , wearing only a bathrobe, sexy as hell. Damn... Even now you can't ignore her sexiness and your dick jumped hard again as memories of the bathroom action overfilled you.
"Courtney, I am so sorry..." You start, looking at the floor, trying not stare at her body and not meet her eyes "I don't know what happe...."

"Shut up!" she interrupts you, sounding annoyed and insulted