Sean Penn, who is to star in new film “Milk,” has shared an on-screen kiss with co-star James Franco.

The actor was reportedly so excited about his first gay kiss that he sent a text message to Madonna about it.

Mr Penn and Madonna were married in 1985 but divorced four years later.

Mr Franco said:

“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.’”

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