What do I do😞

So recently after high school graduation (back in May) I lost all my friends like everyone who said they were my friend either told me I changed or completely left. And my best friend since kindergarten, kindergarten y’all so best friend since like 6 years old went to a different college than me she. But she made time for all her other friends to see them before she left for college but her excuse for me was “you re always working or with your boyfriend” and there was several days I was NOT with my boyfriend. And I tried to hang with her but she was with some guy or her other friends. And she’s putting all the blame on me for not seeing her before she left. Am I wrong for being hurt about this because I have not one single friend anymore my only friend is my boyfriend. Advice 🙁