On the way to the airport, Finland spent a lot of time daydreaming.
It's January 1st, and it's a new year; she would celebrate her 24th birthday on the 15th, and on the 16th she would meet Jean and go on an adventure with him for the last time. Then, on the 30th of January, they would be separated… forever...
Finland would give Jean the potion so he would forget about Finland and all the secrets about the Alchemists he accidentally heard...
Jean would definitely have a rough couple of months after taking the potion, but many people would accompany him and help him recall his forgotten life. Finland, his best friend since college, would not be there with him. She would never be a part of his life anymore.