Why?

Jenny, relationships are like that, just forgive him and move on, that is what love is all about! Boys often lose their temper and say things that they don't mean - don't take them seriously! Just sulk about it for a while, and he'll come running back to you, saying that he's sorry and that he never meant those words and never meant to hurt you. This is just the beginning, you have a long way to go together. These are little roadblocks. Forgive him for what he said, and then later sit down with him and calmly tell him that it really hurts you when he talks like that and it broke your heart to hear those words. There won't be any difference immediately, but talk to him like this everytime he hurts you, and then he'll start changing in a few months time. Love is wonderful, enjoy it!