Ross and Dorothy are quite devoted to one another, and to their child
Remus is excited to share the bed with his mother when he's 4 after she had a argument with Ross. The way they make up is also quite sweet.
The relationship between Snape and Lily. It's apparent that they do indeed care about each other.
The way that Madam Pomfrey and the others who are in the know treat Remus from the very beginning.
When the Marauders finally understand what kind of "illness" Remus is afflicted with, James and Peter are quite shocked and uncertain about their friendship... but Sirius never falters in his affection and loyalty.
The way professor Meyrigg and Remus treat one another during the hospital wing stay. When she discovers that he is a werewolf, she doesn't mind as such. He is grateful for this and tries to get his friends to lay off of her in return.
The lengths the other Marauders are willing to go to for [Remus' sake (including doing research in order to help him out or stealing the cause of his discomfort or providing him with the food he needs) is endearing. Especially when he is willing to do the same for them and they know it.
The concern that professor Van Dorn shows towards Remus' wellbeing, even if his method of helping is somewhat on the left field.
The moment that James and Sirius make Slytherin inkwells explode. They do this to make it clear that any attacks against their friend - physical or otherwise - will not be tolerated.
