James Allen News Center

On American Idol Simon Cowell is mean, condescending and insensitive. However, when it comes to love, the man clearly knows how to treat a lady. Cowell and girlfriend Mezhgan Hussainy are officially engaged, and she has one hell of an engagement ring to prove it.

Just last week Cowell denied being engaged. However, Simon`s agent, Max Clifford, told PEOPLE:  "When I asked him last Wednesday, when he and Mezhgan were about to fly back to L.A., I said, 'Are you engaged?' His answer was, 'Max, I'm not engaged.' That was last Wednesday."

The 36-year-old Hussainy and the 50-year-old Cowell have been dismissing engagement rumors for weeks.

Hussainy exclusively told RadarOnline.com`s David Perel about the engagement. Perel says: "Mezhgan is bursting with joy over the engagement and it's obvious how happy she and Simon are together." According to the Radar report, Hussainy "was all smiles as she told RadarOnline.com exclusively that the couple, who are living together, are officially engaged."

Hussainy, who works as head make-up artist on American Idol, met Simon on set several years ago.