I need to tell him something. Or do I?

I need to tell him that this thing between us, whatever it is, isn’t a good idea. He should be out there with girls his own age doing the things that they do. I need to tell him that being with me won’t get him anywhere. But why do I desperately want to go on a bike ride with him? Why can’t I just have fun and not worry about the future? Why can’t I just enjoy the attention of a young guy while it lasts? This is probably just a little flirtation for him, it doesn’t really mean anything. I’m sure I’m making a big deal out of nothing, like I always do.