is the text ok?
Sara and I are best friends but we have different opinions on friendship.
She thinks that she should be the only close friend for me. On the contrary I believe that it is possible to have more than one best friend.
When I meet Eleonora, for example, she gets angry; she is in a sulk for a while but then she is soon over it and everything come back like before.
I shared your opinion till I read this and I strtaed to have doubts:
More than one best friend | The Grammar Vandal
Can "best" be collective with the meaning "of the most excellent kind."?
Ny the way, isn't a best friend one of your closest?