Coming back home, Christian first had to deal with his sister, just as he had expected. She asked him a couple of questions about what had happened and why he had stayed behind again, but he brushed her off for now. As While he felt happy about getting Eva's phone number, whether she was actually taking him seriously, and if there was any real possibility for further development, was an entirely different matter after all.
Now in his room, he started thinking things through again, reflecting on his encounter with Eva.
When he left the restaurant, Christian had initially deliberated whether he should wait for her until she was ready to go, and leave together, but since it was their first encounter, he decided that maybe taking the safer approach was the better option this time.
Most importantly, he felt that if he had stayed, the atmosphere would have become awkward since he didn't have many topics in mind that he could bring up.
