Skye loves cuddling with Jack, feeling his soft rabbit fur, loves to wrap herself around him and since she's a vixen and has a really good sense of smell, she also loves his scent. So scenes like this are a common sight if she feels safe and unobserved. Gently squezzing Jack against her, pushing the snout into his shirt collar, snuggling with him.
Jack loves this to, and even if not, there wouldn't be a single thing he could do against it.
Fortunately for his wardrobe Skye has settled with his neck ties.