04/25/2013 01:53 pm ET

Justin Timberlake, Jessica Biel Marriage: Singer Gushes About His New Wife On 'Ellen' (VIDEO)

It's been six months since they tied the knot in Italy, but it sounds like Justin Timberlake and Jessica Biel's relationship is better than ever.

Timberlake stops by the "Ellen DeGeneres Show" today (April 25) and gushes about his new wife, admitting that he thinks marrying her was the best decision he's ever made.

"Every once in a while I can catch a glimpse of her when she doesn't see me looking, and I have this moment where I'm like, 'If you never make a good decision ... if you only make bad decisions for the rest of your life. You made one really good decision,'" Timberlake says to a swooning crowd, continuing, "Because she's just like ... it's nice to marry your friend. It's nice to marry your best friend. It suits me."

After nearly four years of dating, the couple walked down the aisle last October in southern Italy, sharing their wedding photos with People magazine.

The pair was recently seen canoodling at the Time 100 Gala in NYC on April 23, posing together on the red carpet before celebrating Timberlake being one of the Most Influential People in the World with friends and fellow honorees like Jimmy Fallon, Christina Aguilera, Lena Dunham and Jimmy Kimmel.

"It's weird because it feels like almost nothing has changed, yet something that you can't really describe, or something that isn't tangible, has changed," Biel told DeGeneres of their marriage in November. "It just feels incredible."