Andy Cohen is a man of few regrets but theres one in particular that sticks out in his mind.

The Watch What Happens Live host spoke to Entertainment Tonight about his 15 years of hosting the late-night Bravo show, and named one question he wishes he hadnt asked Oprah Winfrey when she appeared on the program in 2013.

This was a huge moment for me and for the show, the entertainer said in an interview published last week . Im such a fan of Oprah.

But Cohen said he wishes he hadnt asked if she had taken a dip in the lady pond and named it as one of my few regrets.

It meant so much to me that Oprah Winfrey did the show. Its gone brilliantly and I turn around and ask her if shes ever had sex with a woman. I mean, couldnt I leave it alone? he said.