I do a lot of stuff similar to
>>17463076 except I also intentionally make myself upset at the person I'm "targeting" so to speak.
For example, I have a friend whom I like a lot and would really like to date (still haven't told them how I feel though), and I try to pretty much cut off all social interaction she has with other guys so I can have her to myself. If that's not a bad enough thing to do to a friend already, I actively search for reasons to practically hate her, like making up scenarios where she invites another friend of mine to her house, and I end up believing these scenarios for some reason. I also try to get an argument with her quite often in order to make her feel like she should talk/interact with me more.
I'm an awful person.
