Should i break the friendship?

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A special friend of mine unexpectedly remembered my birthday a week ago. We've bee friends for almost 7 years and previous years, he always greets me late and not on my exact bday. I was not expecting a greeting as well because we had issues previous to this and had been in no contact for a long time. When October came in, he started to message and apologize for not keeping in contact due to problems which he said he'll just tell me later on. On the day of my birthday, he greeted and I was a bit cold. I asked why he knows. He just said he remembers. About 4 years ago, he told me he doesn't remember birthdays because of his upbringing in his family so i thought this time around he will forget it. Honestly, I was planning to use this excuse of him "forgetting" my birthday to break the friendship. Needless to say when he remembered and not because fb told him, I was touched but still could not forgive why he lost contact. So, I'm at a loss right now as to how to proceed.