Guy probs

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I'm completely heartbroken and I don't know what to do. My bf just graduated high school and is about to go off to college. He was recently my first and I've never been so in love. I'm not sure how the topic got brought up but he tells me he's curious about other girls but he loves me and wants to be my last. Is this normal because I'm totally bawling my eyes out right now over it?? He says he loves me so he would never act on it but sometimes he feels so curious that he would. I don't know what to do. Any advice?