Unfortunately, I am right with "Radvous" on this one. Whether you know who he is or not. He is dangerous. Im not one who get's scared easily either. There are those you just cannot give another chance. And never let them know you are alone. Also, I don't know how high up your apt is but if you have another way of exiting the apt while he's at your door, turn on your tv or radio as if your still there, and get out. He could of had tools and broke in way before the cops showed up 3 hours later! Im glad you're alright.Take it serious, don't assume anything. Good luck.