Lost all my list and just remembered that I once read this manhwa where the FL has to marry rulers so they can ascend the throne safely. Once she marries them any sort of harm inflicted on the emperors would be transferred to her. In one of the chapters the ML’s tea gets poisoned and she gets poisoned instead. I FORGOT A LOT OF THE DETAILS but it’s historical and the aesthetic is East Asian I’m not sure if it’s Chinese or Korean PLS HELP ME

The FL was older than ML and then they get separated cuz of war and the FLs letter weren’t being sent to ML so when the ML returned all grown up the knights hated her and wanted the ML to marry the silver haired princess instead. I also remember her researching something and then coughing up blood.
Phh I am interested...sorry by the way, for not answering the question.
Found it and it’s called ready for divorce, it seems so boring now though
Damn, and the way you described it, it seemed really good. Sometimes people describe it better...but I will put it in my want to read, for the ifs ands or buts.