Why does James tell Samantha maybe it hurts me to be your friend?

James tells Samantha that "maybe it hurts me to be your friend" to express the emotional toll their friendship takes on him. He likely feels conflicted about his feelings for her, suggesting that his affection may lead to pain due to unreciprocated feelings or the complexities of their relationship. This statement highlights his vulnerability and the struggle between wanting to maintain the friendship and the emotional distress it causes him.