Prucan Head-canon time!:D
I have the idea that, trough their lifes togheter, they start giving each other massage when the other one is restless or stressed.
Like most of the time it’s Gil who give one to Mattie after a meeting or a day playing hockey. Matthew become a real pile of goo…until Gilbert decide to tickle him.XD (I love the idea of Matthew being ticklish.XD)
Othen than that Matthew will often Give a massage to Gil when he become restless and have insomnia. Gilbert won’t stop talking and moaning at how great it feel until he slowly nod off.^^