Your best friend is inoring you for his sister what do you do?

I would first try to understand the situation by reaching out to my friend and expressing my feelings honestly. It’s important to communicate that I value our friendship and miss our time together. If he's still focused on his sister, I might give him some space but remain open to reconnecting when he’s available. Ultimately, I’d prioritize my own well-being and seek to strengthen other friendships as well.