I wonder if it's possible for you to socialise outside the home a bit more? It might break the routine/silence/dullness up a bit if you, and/or he, could have separate hobbies and interests? It might be healthy/helpful for you to have opportunities to get out and about to meet some new social circles? It might help stimulate conversation too, if you have new topics to chat about when you both get back home from separate activities?
Does your energy level match his, or are you more outgoing? How about going swimming/joining a book club/walking group/coffee and chat group?