Manhua

What is the title of that one bl manhua where the guy confessed his feelings towards the mc,then the mc ran away and the guy chased after him,but then the guy got into accident and died. After that the mc time travelled to the past and want to make sure the same thing did not happen again. However it was revealed that all of this time the mc was just dreaming/ unconscious and the guy is dead/in coma idk

I think it was a school romance and they were best friends