Breakthough?

Since our 5K Aaron and I have run twice. Monday, we ran our usual 5 miles. Only this time we ran it in 46:20! The fastest I have ever run a five miler was in 52 minutes. I couldn't believe it! I think we are starting to make a breakthrough with our speed. We've have been doing five milers for about 2 months now. I think our bodies are finally getting used to the distance. At the end of my run, I still had enough energy left to seriously pick up my pace at the end (about an 8 minute mile).
Today, I ran 3 miles in 26:42. This is also my fastest time yet. Granted, it is only 9 seconds faster. My goal is to reach the 24s by May. I've got my work cut out for me.