Responses
She's not "just" using him because she clearly said she'd tell him everything later, which mean when every single problem with her family will be dealt with since she can't for now. There was a promise made and she definitely can't say it and also won't since she's faithful, also because of the shadow of her abuse and the threat of her "father", like she wanna say but she can't
I feel like she doesn’t understand how big this is for him. I mean his childhood friend who he seems to have had feelings for, drowned before anything could happen between them or he could even confess. Now she’s back from the dead in his eyes and wants nothing more to know what happened and save her. She didn’t tell him anything about her life. She’s just using him while he clearly has missed her so much.