Happily married?

I'm happily married, pregnant with our 2nd and started a new job, which is where the problem is. There's a guy who delivers soda to my store and I usually check the delivery for his company but I find him really attractive. I feel bad, my husband and I understand that there are people out there prettier than us and it's no big deal, but they guy keeps his receipt printer on his belt (like every other delivery guy there) and we were talking about how annoying it was because it keeps turning itself off, and I looked at it and kept glancing over at his private area. I didn't even realize I did it until a few min ago, looking back on my day, and now I feel bad. Should I tell my husband? I don't even know the guy's name. He's just "soda delivery guy". Is this considered cheating or human nature?