whats he trying to say?, :( Options

[ilikeyerrpants]

Okay, I confessed to a guy I liked him, but he said he didn't like me in that way. I didn't have a boyfriend then, but he had a girlfriend. Me and him we're great friends. And even after I confessed we still remained as if nothing ever was said, he treated me the same. Basically, he still flirted with me tons, and he still looked me dead in the eye and smiled. But today I went to his work [which is where I normally go to see him] but I was with my boyfriend and he didn't even speak to me! Luckily, I knew the manager there and I talked to him, although the guy I originally went to see, stood there right in front of me and my boyfriend, but didn't say anything. That's so not like him!

I don't get it, why would he act this way?
Do you think he likes me secretly but doesn't think I should know because he has a girlfriend? and he definitely isn't a cheater.

Might I add that he looked at me with somewhat of sad eyes when he saw I had a boyfriend.