Not really, he's fair game. Of course, you're allowed to feel however you want, but don't confuse that with what other people are or should be allowed to do.
If she broke up with you it stands to reason that she's not going to be that bothered but you are going to be reeling from it for a few weeks. She would do well to consider your feelings, but given her vastly different perspective on the event, she probably doesn't realise you feel that way, and in any case she is under no obligation to consider them.