There is an issue between you concerning logic versus emotion. Your lover tends to think and operate on a more logical level, while you are more comfortable with feelings -- irrational emotions that have nothing whatsoever to do with logic. This can be a problematic mixture, because each of you expects the other to react in the way that you would react in the same situation, and you may be confused and even irritated when that fails to happen.
Logic and emotion are distant cousins at best, and more often than not, you probably end up looking at each other as strangers. How could this person react with such intense emotion? Your partner may think, even as you're wondering, How could they be so cold and logical at a time like this? If you want this relationship to be fulfilling for both of you, you'll have to put time and energy into communicating on a level that both of you understand. This might mean stepping outside your own usual way of looking at things, and trying to see things from your lover's perspective -- which can be uncomfortable at best. Intense emotional displays can seem threatening or just dramatic to someone who relies on logic, and logic can seem heartless to a more emotional soul. Anger as a response to this situation won't help anything, and only makes your communication worse. Adjustments will be necessary on both your parts to make this work.