I found out about ranmir's old girlfriend wich many think left him, then at some point i found a cave where her was rested, i found a letter and gave it to him... he said he had some thinking to do. Now keep in mind that i did not go to Vex to get the quest to find her in that cave, i found it by accident and later on i discovered there was actually a quest for it...
So does it make any difference? Does ranmir change is drunken state even if i did not have the quest before handing him the letter?