This phrase is of Chinglish origin, originally 心塞 or Xin Sai, the characters literally mean 'heart' and 'stop'. It is a nifty expression which suggests a kind of feeling that makes you indescribably uncomfortable.
A: Some say that Justin Bieber is popular only because of his beautiful face, but not his voice.
B: Oh that makes me heart stuck! Justin Bieber has the voice of angel, how dare they say that!
by Travis Who June 5, 2014
Get the heart stuck mug.
A relationship or friendship ( good or bad ) that you can’t get out of your head, which you thought had faded long ago but is still somehow alive and you have the need and want to get rid of that feeling.
I really can’t get her out of my head. She is the stuck-heart in my mind.

You can’t actually use it in a sentence really it’s more of a word that is used in your head and as a way to reflect and understand a emotional feeling.
by Irxland February 15, 2020
Get the Stuck-heart mug.