I really liked the scene of the MC and sis when as kids she gave the cupcake to the MC and he shared it with her, that was very touching, but then as adults the scene falls flat on its face when the MC fails to share the cupcake with the sister.
For me it makes the MC seem like he doesn't have much if any affection for his sis
. If he had shared that cupcake with her in the hotel that scene would have been much more touching and I would have felt like he has some affection for his sister
.
Then saying to himself "I should properly thank her". He should have properly thanked her by giving her a kiss and Sharing the cupcake with her
.