Is it normal i stalk/obsess over my crush?
I've had a crush on this girl for a very long time. We're very close and best friends and we've known each other for years. (I'm a girl also) She has a girlfriend of about 3 months.
I think I've come to terms that it probably will never work between us, but I can't stop obsessing over her. Most of the time when I think about her, I cry uncontrollably and cut myself.
When I'm not talking to her, I follow her wherever and write down in a little notebook everything she does, even little things like when she brushes a hair back or sneezes. I keep info on what hours all her classes are, and what her plans are on weekends.
I've recently bought a phone to take pictures of her (a cheap like $40 TracPhone with a camera on it, I have an iPod that only has an inside facing camera) when she's not looking.
In the classes we share, when she's not paying attention I steal small things of hers like a spare eraser or pencil and I keep it in my bag.
I think about killing her girlfriend a lot, I get so angry and upset when I think about them being together. Or occasionally I think about killing my crush so her girlfriend can't have her.
Is this activity normal?