Whelp, added to the list of romance to read lol.
This one has potential.
Bet she has always had an interest in him, possibly from when they were little kids, but in typical rom-com MC fashion he may not remember that she was the reason why he started making sweets in the first place. He also probably doesn't remember younger her, especially if her personality was more like what she was showing at the end there. She also seems like she knows a lot about sweets and it probably has something to do with him and her wanting to get close to him...and now she has the chance.
I could also be completely wrong, but I have read so many of these types of stories that it just seems like that's where this is headed.