Kelsey Grammer shares the key to his successful marriage with wife Kayte Walsh

Kelsey Grammer recently got candid and opened up about the secret to his successful marriage with wife Kayte Walsh.

In a talk with PEOPLE magazine, Garmmer, who has been married to Walsh for 14 years, said, "I always say, 'Love is a contact sport.’ Love Is a Contact Sport,” referring to the title of a 1987 song by Whitney Houston.

“Once in a while you got to back it up with some action. I just always try to say to myself, 'Remember the blushing that you had when you first met. Remember that energy, that circulation that dialed you up just a little bit,” the Avengers: Doomsday star added.

For the unversed, the 70-year-old American actor and film producer and Walsh, a former flight attendant by profession, tied the knot in 2011.

The couple shares three children: a 12-year-old daughter, Faith; a 10-year-old son; and an 8-year-old son, James.

Notably, from his past relationships, Kelsey Grammer became a father to daughters Spencer, 41, Greer, 33, and Mason, 23, and son Jude, 20.