Not that long

The skill of Amber's cock sucking, the jets of water roaring down on you, plus the knowledge of how wrong and naughty this all is has you rapidly approaching your orgasm.

"Amber, I'm gonna cum!" You moan.

In response, she sucks your cock harder. All too soon, the pleasure is too much. You grab her head, holding her in place as you shoot your hot cum down her throat. She doesn't resist and swallows every drop you give her. As you come down from your orgasm, you let go of her head and as your knees give way, you sit on the floor of the shower next to Amber.

"Welcome to the family, Bro," she says with a big grin on her beautiful face. You notice that her big cock is hard and ready for action.