Trust your instincts. Which is hard to do sometimes when you have all this emotional involvement.
Talk it over with him. Figure out what went wrong and what can each of you do to fix it.
Easier said than done.
But if it isn't an abusive or a truly unhealthy relationship, try to work it out.
Good Luck!
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Success in not final; Failure is not fatal; It is the courage to continue that counts. Winston Churchill