The whistling is what brings him back to their surroundings and current situation. Fenris gives her another quick kiss, the hand at her waist tightening possessively before he lets go of her, stepping away. He isn't embarrassed of her or of them; it's being on display that causes him a bit of uncertainty. "Only if that's the way you decide to work out all of your negotiations."

He'll serve their hearts on plates for you.