Thought we were besties

I thought we were besties
But you seem to hang with her more
I am starting to feel like you don't want me

I can't understand
Why you are always with her
I am starting to feel really lonely

I get upset a lot I think I might have finally worked out why
People may call it jealousy but I don't care
They can call it whatever they want

I maybe a be jealous but it's not my fault
I am just getting left here
Like I am nothing, like nothing in the world