finding a drama

hello i'm looking for a drama where a guy is in love with a girl but then something bad happens and he doesn't trust/misunderstands the girl so he abandon/ hurt her or something similar but later founds out the truth and tries to get/find her again and tries to get her to accept/love him again. please help me!!!! Thank you!

it does'n have to be the main characters this is about i just want to find a drama with this story.