"Cho Chang told me yesterday Hannah was sneaking off to meet someone in the Forbidden Forest.  She saw him once but didn’t get a look at him.  If he was badly burned from the Fiendfyre it would explain why he was wearing gloves even into spring and why he had his hood obscuring his face," Hermione said.  "He may have legitimately tried with her and then lost it when she rejected him.  If she was truly a questionable half-blood it would only have fueled his rage towards muggle-borns."