I used to stutter- a lot. My wife knew this, since we’ve been together for 7 years, and i only started treatment about 2 years ago. She doesn’t care that i stutter, instead she helped me through it and assisted me when i got treatment for it. Stuttering is normal, and nothing to be ashamed of. If he says he doesn’t mind, believe him and try to relax. He sees beyond what’s outside.