After Aramis is shot, Porthos and Athos rush to his side. Frantically, they check to make sure he's alright. The cross around his neck stopped the bullet. He looks to the ceiling and says, with relief, "See? There is a God!"
When at the end D'tartagnan finally accomplishes his dream and becomes a Musketeer, and gets some kissy faced loving from Constance. He certainly earned it.
Watch carefully and you'll notice that Porthos and Aramis clash swords before or after something dangerous, as if they were high-fiving.