How can I make him realize there is something between us?

I've been dating this guy for a year on and off... Recently we've been doing a lot of fighting due to him forgetting about our plans, and making other plans instead of keeping his original plans, and also working so much that we don't have time together. So all this fighting brought out the ***** in me and I was really angry every time he messed up in the simplest ways, and that pulled him away from me. So now that he pulled away from me and I'm bitter about being forgotten about how can I show him that there is something between us that is worth fighting for? I'm getting over the fact that he is a very forgetful person not only with me but with everyone around him. I'm learning slowly how to get over it. Please help me get my man back.