looking for dramas which has many Angsty and painful events for a male lead and he lost his everything...and only female lead believes him and help him...

something like:

war of son ( but plz with more romance)

the princess man 

Shopping king Louie - she helps him as he looses him memory. It's cute
Master: God of noodles 
Ugly Alert is the best but it has 133 episodes
+1 Ugly Alert

Woody Sambo- Spoilers: He ends up homeless and the girl goes to find him on the streets to help him.
Goodbye Mr. Black
Cain and Abel (kdrama)
ToGetHer
Cruel city.  Everyone is angsty, all the time

fated to love you his angst made me cry like a baby

missing you, I wish dropped it because too much crying

glory jane

moon lovers

high school king of savvy

scholar who walks the night 

night watchman' journal

East of Eden ---  All u r looking for:
he looses everything, she finds him, believes in him, and chases after him ;) .... loads and loads of angst in this melodrama , but exceptional writing, well-developed characters, wonderful female leads, and a truly wonderful selfless hero ... action, drama, romance, bromance, history, casinos, gangs, politics, it has it all !