Whatever comes to mind. I kinda have that same problem. I think this would probably be better put in the Relationships forum, you'd get better answers, but I'm no mod, so I don't know. I just spout whatever is at the tip of my tongue. You only regret the things you didn't do, right?
Talk about random thoughts you have. Or use ideas from here... "So...hmm....do you think that sex between a stapler and stationary is hot or what?" You will never run out of topics
some pauses are nice...though can get a bit wierd after a while...thats when you just say whatever and that might spark a story in the persons mind