After showing off their sweet chemistry [1] earlier this week during a visit to St Thomas' Hospital in London, Kate Middleton and Prince William continued to make us jealous of their relationship with their latest outing. The royal pair shared a few tender moments when they visited London's XLP project [2] on Friday morning, laughing and chatting as they learned more about the youth mentoring program. The two may be approaching their fifth wedding anniversary, but they still have that honeymoon look in their eyes. From their sweet family vacations [3] to their adorable children [4], these two practically have a fairy-tale romance. See more pictures from their latest appearance here, and then check out how their love has developed over time [5].