any drama where
1. SML ends up with the FL

2. both MLs have equal screen time and the unlikely one ( could be considered SML) ends up with the FL

If you can stand Korean melodramas then Passionate Love (2013) probably fits the bill 

1-love alarm

2-king in love

Also, for me personally, it was school 2015. Maybe it was obvious to others, but I was not expecting that ending.

Chuno/The Slave Hunters