Once couples get past the initial 'getting to know you' stage of the relationship (usually the first five to seven dates), the conversation can sometimes come to a grinding halt. It's not that you never have anything to say, it's just that there's a lack of flow going on. In this case, it probably means you're incompatible as a couple.
However, if the conversation is better than ever, you could be onto a winning combination. If anything, the discussions you have improve once you get past the first few dates. Now you can get into the real stuff! If she can't wait to talk to you, the chances are high that she's in love. Do you feel the same way about her? If so, you're going to have plenty more conversations to look forward to.