Making out with a coworker?

Why would a guy whom I'm not currently dating want to constantly kiss me? My co-worker (yes I said co-worker) and I are very attracted to each other. I've known him for about 3 months or so. He's a lead and I met him because he had me with in his area. After that one time he would always make an effort to say hello. Shortly after that I broke the ice and talked to him. Ever since then we talk regularly. Shortly after breaking the ice we started texting. Just recently we have started making out. We either make out in a hiding spot at work (we work in a warehouse so we hide behind a pallet) or in my car at the end of my shift. This started a little over a week ago ) I work with him 3 days out of the week). We have made out several times now and no we have not had sex. Why do you think he would want to make out with me when we are currently not involved? I know kissing can potentially create emotional bonds so I'm curious from a guys point of view.
Making out with a coworker?
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