That's exactly what I looked up right now. Yes, they where. She appeared on the last season which has been aired 89 and they were married since 87, so - even considering a season is probably made in the year before being aired - they were already married (which happened pretty fast after just a bit over 3 months after they met).
Bruce Willis!
Bruce Willis played detective David Addison on the TV series "Moonlighting" with co star Cybill Shepherd. It was on ABC from March 3, 1985 to May 14, 1989
The American actor Bruce Willis got his big break in 1987 on ABC prime-time in a sitcom called Moonlighting. Since then, he has played in numerous more tv shows and movies.
His Full Name is Walter Bruce Willis
Mortal Thoughts
Bruce Willis and Cybill Shepherd
David Addison
willis
Bruce Willis!
The cast of The Moonlighting Phenomenon - 2005 includes: Cybill Shepherd as herself Bruce Willis as himself
Bruce Willis played the fast talking detective David Addison in Moonlighting.
Moonlighting.
True
Moonlighting
"Die Hard" & "Moonlighting" Actor
Moonlighting co-starring Cybill Shepherd
Dutton and Willis have never appeared together in a movie.