"Laughter," Jennifer said. "Laughter is great. But being best friends, I think, as well. We are just very comfortable with each other." She continued, "We have so much fun. We can be doing nothing and just enjoy every minute of it. We don't get bored of each other." "Yeah and I'm constantly in awe of her ability to just keep everything going," Stallone added. "I don't think, men, that's their forte."