4 years later…
(A/N: Luke is 21 and Flora is 22. Professor Layton and Flora still live together. Luke lives by himself.)
One day, Luke went to Flora's house when he knew she wasn't there.
"Luke! A pleasant surprise. Flora's out, but you knew that already?" asked Professor Layton.
"I actually wanted to talk to you, Professor."
"Come in dear boy."
"There are two things I want to talk to you about. Well, actually it's only- never mind." Luke cleared his throat. "First, I would like to ask you for Flora's hand in marriage."
Professor Layton beamed at Luke "Of course my dear boy!"
"Second, what kind of ring so you think she would like?" Luke looked so much like he did when he encountered an unsolvable problem as a young boy, that the Professor laughed out loud.
"Well, that is quite the conundrum, but I think I might have the solution. Wait one moment." Professor Layton exited the room and returned moments later with a small box. He placed it on the table in front of Luke. Luke picked it up and opened it. Inside, there was a silver band with a flower made of opals on it. In the centre of the flower, sat a miniscule sapphire. Luke looked to Professor Layton for an explanation.
"I-I was going to give it to Claire. I want you to give it to Flora."
"No! Professor I won't-can't accept this! It was meant for Claire!" Luke cried.
"I want Flora to have it. Claire, Claire isn't coming back."
"Thank you Professor!" Luke stood up and hugged the Professor.
"You are welcome, now go ask Flora."