Beth,
I don't have a problem with silences, in fact, that's how I prefer it! Lots of nice, quiet, solitude. My partner is very frenetic, and feels the need to fill up spaces, so it's a little uncomfortable for him at times.
So, I can't really help you with that feeling.
But what you said, "a friend who pointed out that I did that" was really interesting and resonated with me. It's kind of interesting what it takes for us to recognize our shadow side. I was thinking about an instance for me and it was when my mom was talking to me about my marriage and she looked at me and said, "you seem to somehow like the drama."
I was so taken aback because of course I don't see that in myself. But since then, I keep that in mind.
Dandylife