His actions make us think he is dedicated to our relationship.
Two nights ago, they were together and he asked her "How much do you love me"? It seemed a little out of character for him, and it caught her off guard, and she did not answer. The next night she said she was surprised he would ask this, like she would say something like, Oh, to the MOON and back", and simply replied "Enough to break my heart". They went on to have a nice discussion about it, and told him we were happy.
It was a good talk, and reassuring.