滥情人无心
[làn qíng rén wú xīn]
Lan qing ren wu xin (A heartbreaker without conscience or Heartless promiscuous person): From a literal understanding, Lan indicates excessive or unreasonable indulgence. Qin refers to emotion or romantic relationship. Wu points to negation. Xin denotes heart/mind/intention. All combined it might be a dramatic expression to describe a careless heartbreaker or overly emotional person who doesn't take care with others' feelings.