in the last few weeks gradually my boyfriend has been slowly staying in my home more nights a week. been together 4 years. he has always smoked since we met. i have always made it clear i hate smoking in a home and think its dirty. i pointed this out a million times b4.. this used to not be an issue but now hes here more he keeps try get away with smoking inside..started off standing just inside the back door to smoke..to now openly smoking when im not here or if im in bed.. this morning i got up and instantly smelt smoke from the upstairs landing.. went downstairs he had left for work..there was an ash tray with about 10 butts in it in the kitchen..not even trying to hide it.. bits of ash on the table and ground...its driving me absolutely insane.. surely this is just complete and utter ignorance at this stage how can i get through to him how big a problem this is gonna cause between us..