Pass a couple

I was caught by surprised when a couple came from the opposite direction. They were older than me but probably younger than Amy. They were both quite fit. I stopped walking and looked at them as they passed. They both looked me up and down. The girl notice my hard-on and her eyes widen a bit. The guy checked Amy’s behind before continuing. Once we turned a corner, Amy stopped and turned toward me: “This is so exciting!” And I kind of agree with her. We continued walking but I heard noises from behind and told Amy. “Run a bit.” We jogged and the path climbed up. We took a position to look at the path down us. We saw that the couple had turned around and was following us. “Hum… It seem they want to see more of us.”