Finn has loved you for so long. He would never ever do anything to purposely hurt you. And if he hurt you somehow he'd be angry with himself.

You guys had just finished making love, and he made sure during it that you were comfortable, and ready for him. Which is why it was so good. He also made sure when he took some of your blood, since he's a vampire, he was careful and gentle. Now he was just getting you some tea since he knew your body would need it. And one his sweaters. He was proud of himself, he loved you and he was honored to be your first time.