Help me pls...

So the ml has red hair and is some kind of soldier that super strong but scary, meanwhile female lead is a super desired girl in the noble circle so the fl already slept with many guys and is harsh to them after they sleep together. The parents of the fl want her to get married wit ml but fl doesn't want to so she planned to escape but family drugged her and ml to sleep while they had stand in's do the wedding, then drop ml and fl in an island so they can make baby. I can add more but maybe I already said much. pls help me....