After Rosita's death Eugene started drinking pretty heavily.

and by that I Mean that you found him out your door either sleeping on the ground or knocking at your door.

He always said he was fine,but you were done with this,he had to put a stop or he'll be dead soon due all the drinking.

when you tried to talk to him he immediately started fighting back,and you said something that probably made you cross the line.

"She's still dead when you're done with the bottle"