10 Dramas or Movies where a lead develops feelings(romantic or platonic ) for their target or mark. (ie they have hidden motives for approaching that person and find themselves compromised by truly befriending or falling for them ).
7. Kiss Me, Kill Me - let me know if it doesn't count. There really isn't any hidden intent as the FL is the one who hires the ML herself to kill her. Plus after finding out, he doesn't plan on finishing the job.