It would take someone with a heart of pure gold to let Maddie go and do the right thing and you can tell just by looking at Lewis that he is an honorable man with a huge heart of gold. You can see how happy Maddie is to be back with him if only for a visit and it is obvious that

see she ruled the roost while she was there too by the bark at Lewis for not having her food where it used to be. I hope he can bond with Justis and love her as much as he did with Maddie. Hugs to you Lewis, you truly are an angel here on earth.