My wife found out

Johnny got chatting to a girl in a club, "Can I buy you a drink ?" Johnny asked.
"Have you not got a girlfriend ?" she replied, "Guys like you always have girlfriends."
"No, sadly we broke up just over a month ago," Johnny assured her.
"Oh I'm sorry to hear that," she said, "Go on then, I'll have a white wine please."
A few drinks later after a kiss and a cuddle both headed off back to her place and made passionate love.
While Johnny was putting his clothes back on she said, "So, you're good looking, a nice guy and amazing in bed, can I ask why on earth you split with your girlfriend ?"
Johnny said, "My wife found out