For all the times they've fought or pulled away from each other, they still keep coming back. For every moment of 'worse' in their shared lives and marriage, they've found a 'better.' For every place they disagree, they've managed to find a compromise, and Remy knows now they'll make it through everything yet to come.
Rogue whispers in his ear the promise she will always be his. Remy promises her he will always be there.