Hi! everyone, I hope you guys are feeling well. 

As you guys can see, I need help. Somehow I remember a drama, either Korean or Chinese, I don't remember, but the plot goes like this; Ok, so the Villian (who is not the male lead but the second male lead, I think but know that he is a male ) and the female lead starts off in love/ dating and villain buys a ring for the female lead since he is rich not that the female lead cares about that but still. anyway, after he bought the ring he had a cardiac arrest due to his heart condition and needs a heart transplant. However, the only person who had a matching heart was still alive (The male lead). so the villain's parents trick the male lead, who is poor, into thinking that he was their oldest son, but in reality, they want to kill him and have his heart for their real son (The villain) heart transplant so the villain can I've longer. anyway, as they were villains, parents were tricking the male lead the female lead eventually falls for the male lead causing the male lead to be obsessed with her and want her back. 

so that was the plot a guess. however, I can't seem to find it. I watched it some years ago so Yeah. Also, It might have thought I had seen it that time, but oh well. however, if there is such a drama, please tell me or give me recommendations of obsessive male villains with female leads it does not have to be Asian, but I do prefer Asian dramas but it does not have to be Asian.

Thank you 

This sounds like Big Man (2014), it's a kdrama.

 Yuu_Mei:

This sounds like Big Man (2014), it's a kdrama.

Ok, Thank you so much!

Maybe my list can be useful for you when you want to watch Aggressive Male Lead: 
The Heirs 
When a Man's in Love 
Moon Lovers: Scarlet Heart Ryeo 
.Faith 
Jealousy Incarnate 
The Greatest Love 
A Korean Odyssey 
What's Wrong with Secretary Kim
Secret Garden 
 Something About 1 Percent 
 Crazy Love 
Protect the Boss 

Aggressive/Possesive/Controlling/Jealousy/Clingy/Protective/Stalking/Crazylove/Ownership/
Domination/Yandere/Obsessive - Male Lead
 https://mydramalist.com/list/45GEOqoL