Will my ex ever come back?

Me and my ex broke up after 4 years. He said it wasn't me but that he needed to be alone. He needed to find himself, focus on some goals and become financially stable. We had talked a lot about getting married and we both have kids who love each other. I understand that he needs space and time to work on himself, and I am going to do the same but I still want that happily ever after with him. Will he come back? He says that after while he would like to be friends and "re-connect". Is this the type of situation where the guy comes back after some time?
Will my ex ever come back?
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