Why is Make-Up Sex So Fucking Hot?

"One from the back catalogue of my life, this is the regrettably hot sex I had with a cheating ex. Quick and dirty, just how we like 'em."

Two cups.That was what had tipped me off.I'd known, or at least suspected, for a month already, but the extra glass in the sink when I got home from class had confirmed what was already abundantly clear.I didn't say anything...