A bloody nightmare!

My roommate moved out. i was happy, had a visitors over, changed my lower lock. Everything was fine. This guy kept repeating over, and over, don't lock yourself out. i told him i never lock myself out because i always lock my doors with my keys from the outside when i leave. Well, as i was seeking him off, he locks my door from the outside because he saw me holding my keys. I had my keys because i needed to get into my car. Here's the problem, the new keys weren't on my key chain so basically, he locked me out of my apartment and he was gone. A neighbor had to break me in. i called him to make him aware he locked me out. He tells me "i thought you had your keys."
What a nightmare. That's one way to describe my life these last couple of weeks - a bloody nightmare!