What was the first sitcom to show a gay marriage?

I think it was Roseanne, it beat friends by a few months.... was there one before that?What was the first sitcom to show a gay marriage?
The first sitcom to have an openly gay character was Ellen back in 1997, the first prime time romantic same sex kiss between two teenagers was Dawson's Creek. I am not sure on your question though, I'm sorry... I guess I deserve a thumbs down because I didn't answer it.What was the first sitcom to show a gay marriage?
Taxi Cab Confessions
It could have been Roseanne. I remember that epsiode too!