You make love.

You slip your fingers under her shirt and caress her body.
She moans into you ear and says, "Do you want to fuck me?"
"I'm gonna fuck you so hard, you won't be able to work tomorrow", you say while nuzzling her neck.
"I'll hold you to that!", she says.

She takes off her shirt, then her bra and you are greeted by the sight of your best friend's large, perky tits. You can't resist yourself. You dive in and take one into your mouth. Your hand kneads the other one while you suck and nibble playfully at the other.

She runs her fingers through your hair.

You lick her tits for the last time and pull her skirt off, then her panties. Her shaved pussy is wet, with anticipation.
You get naked yourself and you both bask in each others warmth.