Super Embarrassing. I couldnt get wet

Me and my boyfriend have been dating for awhile and i am in love with him. Lately we have been so good together, Weve been inseparable. But i have had so much stress deciding my college picks and finishing up senior year and then also the terrible highschool drama . Anyway we were in bed cuddling and all that but when we were having sex i was so dry. It made him feel terrible i was really embarrassed and he said that i wasn't sexually attracted to him. But that is not true.. Why couldnt i get wet when i have always been like a waterfall! Somebody relate😩