Your fp (favorite person) is allowed to have other friends besides you. They're allowed to have a life outside of you and not everything you do should affect them.

It's really hard for me to remember this and I start getting mad if my fp talks to someone else or has fun without me. I have to remember they're their own person and dont always want to talk to me.

I know it's difficult but it's always good to keep this mindset if you're getting upset about your fp ignoring you or afraid of them losing interest In you etc.