I (18M) have lose hope in relationships because of (18F)

Read my post history as Im tired of typing again.
to summarise: i had a friend (18F), she asked me out on reddit, i said no, cuz of online dating, we got into the same college, she told others I chased her repeatedely, I am now lonely with no friends, single and depressed. and stuck here for 8 semesters.