Couple of things I've learned the hard way in dealing with people...waiting to catch them with red hands when you see red paint on the wall, will only prolong your misery. Why? U may never catch the red paint on the hands, but you end up catching HIV(gay males, especially those keeping their female partner in the dark, have the highest HIV transmission rate #Fact). At that point, would it matter that you didn't catch him with red paint on hands? No, ma'am. I suspected an ex was using drugs as he became highly erratic, unreliable, started to smell, and wear the same shirt everyday, and constantly needed "just $20, just $40..." and he'd "be right back." I was in denial, because he was well to do when I met him, had a name, and was well groomed. I learned the hard way when he escalated to beating me up so bad during one of his episodes, that I have heart and lung damage.I never caught him with the drugs, nor figured out his issue.When you smell smoke, go! Its not worth the worry nor risk.