梦魇人心空滥情
[mèng yăn rén xīn kōng làn qíng]
This username suggests someone who has gone through emotional turmoil and might find it difficult to trust or be sincere in relationships. 'Nightmare' (梦魇) conveys that emotions or experiences can be disturbing, and ‘Empty Heart Abusing Love’ (人心空滥情) reflects that the person's heart is now cold or disenchanted toward love.