I have a better way.
Have sex with her and then after the orgasms are over, send her on her way with the excuse that it is late, and you have important things to do in the morning.
Then all you have to do is change your cell phone number and tell you neighbors to tell the girl you moved and don't answer the door when she comes around.
This works every time.
My best guy friend does this all the time, but as a best friend I have to cover for him, right?