"I can teach you." He offered. There were a lot of things Odin could teach her, probably, and he wasn't full of himself in thinking so. There were also things she could teach him since he knew very little of gardening or child rearing and development, for example.
The fact that Bella was drawing such strong comparisons between her first overall experience with romance and this one made it so Odin got a few flashes of instances in which she'd had to protect herself from unwanted advances. While he wasn't one to get angry Odin was very uncomfortable on Bella's behalf, which ruined their kiss eventually. Pulling away slightly, Odin looked down at Bella visibly concerned. "Did he ever hurt you?" She was responding to his kiss and he did not want to disappoint her but Odin couldn't help what he kept seeing.