2. Mike was the only one who understand me, but now he can't either.

It's important to remember that relationships can evolve and change over time, and it's natural for people to grow and develop in different directions. Friends may not always fully understand each other, but it doesn't diminish the value of the connection you shared. It might be helpful to communicate openly with Mike about how you are feeling and try to revisit what brought you together in the first place. Additionally, remember that building new connections and friendships is an opportunity for personal growth and discovering different perspectives. Keep an open mind and cherish the memories you shared with Mike while also being open to new connections.