This storyline is stupid and contradicts their earlier hurdle before marriage.

right?? like I don't think there's ANY plot that could justify Haebom doing this to Taesung. It'll be that Taesung's grandad has threatened Haebom with hurting Taessung in some way... but surely Haebom realises this is hurting Taesung worse? I hate it. It all feels out of character.