September 30, 2008 | Celeb Watch

Sean Penn's happy gay moment

James Franco must be one helluva kisser. When he and co-star Sean Penn locked lips for the biopic "Milk," Penn got so excited he texted his ex, Madonna, to brag.

The two men are starring in the film about gay activist Harvey Milk. They play lovers. James revealed: "After our kiss, Sean texted Madonna and said, 'I just popped my cherry kissing a guy. I thought of you. I don't know why.' "

(Maybe Madonna does have a penis after all!)

Co-star Mark Martinez also got some action with Penn. Martinez admitted: "I'm performing, and Sean comes onto the dance floor. He grabs me, and he just slaps the biggest kiss on me. It felt like the kiss was forever. I'm like, 'Is he going to stop?' I had to close my eyes, I just couldn't believe it!"

Looks like Penn got a taste for the gay. He's all ours, boys!