Just say it!
A wife recently said to me, "Why will he not just talk to me? When he doesn't, I imagine all sorts of horrible things."
For a lot of us, it is difficult to express ourselves, especially to our women. In many cases, we have not had a good experience doing that. Usually, women are much more articulate and their fluency with conversation intimidates us, so we resort to silence. Or there might be other reasons we cannot express ourselves such as the environment in which we were raised.
But that does not relieve us of the responsibility to communicate openly and straightforwardly with our partners. The quiet approach only works in a few situations.
Our women desperately need to hear from us about our true feelings - - even our fears. They need to hear that we love them and we approve of them.
Even though it may feel very difficult to you, you must make an effort to communicate with your partner. Your relationship likely depends on it.