Shadow of the Wind #6

Before Julian was going to take the book to the cemetery, he had to of course, pick it up, the bad thing about that was that the book was at Clara's house. Daniel decided to go and retrieve the book so that he could go hide, it, when he entered the house he was able to fetch the book, but of course he ran into problems. when passing by Clara's room he heard noises, some were moans, others were light screams, but all in all, when Daniel walked into the room, he was received by a very heated sex session between Clara and the piano teacher. Daniel's eyes couldn't believe it themselves as they just watched astonished at what was happening. The piano teacher caught Daniel looking at them and got up from doing his business, went over to Daniel and gave him a beating that his ancestors felt from under the grave. When Daniel was thrown onto the street with his book he was welcomed by a bum, a bum whom he had met before but didn't aid, the bum then helped Daniel and took him to refuge. Why would the bum, who had been shut down the offer by Daniel to be helped, help Daniel at all?