Compatibility 90% So why has it ended?

Hi, I am Pig born 07.01.48 and my ex is Rabbit born 07.06.51. He has a different age stated 1958. I have known him for 4.5yrs but we only got really close in January 2019. In June we split up due to age difference misunderstandings, but we got back together again a week later. Then beginning of August he ended it due to what he called 'It's too complicated!' I was really upset as we were compatible and even had quite a few things in common. When he was homeless his friend offered for him to stay at his flat until he found somewhere of his own. My son still lives at home with me, at the age of 31yrs. So this became very awkward for my ex and myself as we had nowhere to go privately. We used to meet up over a coffee and once in a park. He is still looking for rented property and I am looking to downgrade to a 1 bedroom home and my son is in agreement with me. If we are compatible then why did we split up? I even checked out the Romance rise and fall charts. On mine it fell from August to October, now at this time it rises again October to December. My ex's chart is the same from one site but different on another site. Does this mean its just a guide for the right time romance is in the air, or that my ex and I will get back together again?
This is so confusing. Why does fate put two people together only for them to be parted? What was it all for?
Thank you.