How many times can someone break before they can no longer be repaired?

I presume you mean you're in grief over the loss of a sweetheart.

The first and earliest break-ups are always the hardest.

There are two keys to recovery.
The first is to allow yourself to feel the grief. Express it through writing, drawing or music if you wish. Take care not to rush into another relationship until the grief has worn off.
The second, be honest with yourself. Examine the criticisms of your ex. Were they valid? Would many people react the same way in an intimate relationship?
Were you too demanding? Were you too angry, too absent and distracted, too jealous, or lacking in assertiveness? If any of these, examine how you could learn from these mistakes.
Were the problems caused by poor skills to communication and conflict resolution? If so, take some adult night classes in these.
If you know the specific issues, you could look up free information online at Psychology Today.

In the meantime, take lots of long walks, eat healthy foods, take good care of yourself, and spend lots of time with friends.

Ive been broken too many times to count my good friend. But, i keep coming back stronger than ever. I tell myself that i am the fire.....im like a phoenix rising from the ashes.

I feel that way. Try to focus on making new things you like. Things that give you a hobby.