He wants to take a break...

My S.O. For 3 years says he needs a “mental break” from me. This hurt me because I’m honestly a big baby about it. It’s been about a month and it seems as if he is confused. I can no longer wait for him to make certain decisions when it comes to us because this has been making me go insane and we bicker every time we talk about our relationship. So I really do think we just need a break from each other. What does this mean for a man? Has anyone been through this and end up getting back together?