you say he is nice guy and you wants to be with him as much as you can , then i think you truly love him and if you think he is a reliable person then breakup or make up is part of love , because we are human not robots .so just go on with him .
i can understand your pain it already happen with my cousin she break up by his boyfriend just before 10 days of marriage , but now she is married with another guy who keeping her very happy and she also looks happy , she cope with this situation very hard and won , i advise you dont feel devastated everything happen for good reason ,