Can good Sex be distracted?

SpicyDee
Hey ladies in the house, just want to know if it's normal for him to get distracted at the sound of anything during sex, 
This is about me and my boo, our sex is great, he makes sure I get all the satisfaction I need but lately I notice he stays too long to come, he gets distracted at any little sound. Sometimes I like to talk or ask questions during sex bt he will be like" keep quiet u are distracting me".
Am beginning to feel something is wrong