When Unfiltered host Jamie Otis asked Luke if he saw sex with Katie being a possibility in the future, Luke replied, "I definitely think it's very important in a relationship to have sex."
"I just find it crazy that everybody else is just jumping into things so fast," Luke continued. "I guess I've been a little more old-fashioned and traditional than everybody else."
Luke added, "I want to be whole-heartedly into something. I don't want to do anything just to kind of make someone else happy. I want both of us to be happy doing what we're doing -- and I'm talking about sex."
AJ then asked Luke if he's ever been unhappy having sex, because both AJ and Keith agreed they have never been unhappy during the intimate act.
AJ mentioned he might regret a one-night stand, but Keith still shook his head "no."
"Really? Zero life regrets?" Luke asked Keith.
"There were some bad times, but I always enjoyed it," Keith replied.