I think I have this addiction to Melanie Martinez.
Why are you addicted to Melanie Martinez?
I could go on for hours about how great she is
You should focus more on real life situations and not on relationships that could never exist. You are not being realistic and others will think poorly of you if you spend your time obsessing on this person.
I just need to make more friends.
That would be a good idea to have more real life friends. You shouldn't put all your focus on people you can't ever be in a relationship with. It is unhealthy to obsess over somebody and it can cause you more stress.