The friendships in Never Let Me Go sure are complicated, but they're also very realistic. In the novel, just like in real life, friends fight, make up, have misunderstandings, support one another, and accidentally or purposefully hurt each other's feelings. When she's younger, all these little tiffs get to Kathy. But as an adult Kathy looks past all that stuff. Her flashbacks about Ruth and Tommy show us the ups and downs of friendship, but they also remind us just how enduring friendships can be.