i know its hard for a woman to understand , but men are simple : simply talk to him. Just say hey i am here for you , i can see that its bothering you , i want to know what can i do to make you feel better and don't take "No it doesn't bother me" for an answer because he's lying. Stuttering sucks... really sucks... especially for a guy. I'm having panic attacks 30 min before i go to shop because i know ill need to say what kind of cigarettes i want to buy. Lay on the bed , give him a hug and run your fingers through his hair. If you really like him , you will make it work :)