He had tried to keep his distance since she made it clear when she woke that she was in a relationship with Ron, and he didn’t want to overstep his boundaries. Padfoot, however, didn’t have such qualms and made it his personal mission to keep the pair apart at every opportunity. Harry tried to ease tensions between all parties involved, but Sirius could hold a grudge, and he was gripping this one tight. He didn’t want Ron around Hermione not only because she belonged to Remus, but because he didn’t trust anyone who treated their friendships poorly. 