Have you noticed that most people can't stand silence? Whether they're in a group of 2 of more, it's common for people to feel anxious at large gaps in the conversation. Maybe even small gaps.
What frequently happens is that someone (maybe you?) jumps in and says something, anything to get the conversation going again. Anything to kill the silence.
See Conversation Killers: What NOT to Say on a First Date
For many busy professionals, the topic is work. Which makes sense. We spend the majority of our waking hours at work. And for many single professionals, their career is the center of their lives.
Feedback we've received, here at IJL San Francisco, from many daters shows that, for the most part, people are turned off when date conversation turns to work, work, work. Remember, this is a date and NOT a job interview. Your date may be impressed by your professional success. But they don't want to hear about it in depth, for the whole date.
See 4 Simple Ways to Make a Great First Impression
Instead of filling that silence with work chatter, ask your date some open questions about themselves. And be prepared to talk about your life. Your whole life, not just your career.