Just as every relationship has a different intensity, every break up does, too. The above formulas are decent, but the gauge I'd trust is yourself. Do you feel that you've mourned too long? Are you embarrassed to mention his name because your friends are going to say "here she goes again..."? Have you had serious thoughts of depression or suicide?
Frankly, just asking the question would make me suggest that you talk to someone professional, even a campus counselor. You may discover that you're more normal than you realize.
