Help please I think I'm crazy

For starters I'm a 14 year old boy living a pretty good life so far, no real issues happening to me no real issues to make me depressed besides high school. Like many of you may know high school can SUCK. Im a lonely outcast and sometimes my emotions can get the best of me... And I feel like shit. Now heres my problem I get depressed but I don't feel like I should so I make up these insane senerios to make me feel more depressed. I made up an senerio were I went out with the girl of my dreams only to find out she dated me as a joke and dumped me in front of everyone, feeling depressed I turn to a close friend of mine, she would comfort me all night, making me feel better until she will leave me suddenly in the dark, feeling lonlyer then ever I find out my grandma died. I don't know why I make these up in my head I just feel I should be in situations like these like I kind of deserve to be in these situations. They are fucking killing me inside please someone help me.