don't know if I'm just being stupid or what

Jill
My other half has been making me feel like he's backing off, not interested and has been making me feel very unimportant to him. I don't know how to get him to tell me what's going on as if I ask I get shut out, if I say oh by the way what your doing is making me feel terrible he just changes the topic or tries to turn it into my fault. 
Anyone else had this and found a method to get him to talk to me and actually tell me if he still wants this or not as sodding hell this feeling hurts.
Cheers ladies