Does my hot coworker know I'm attracted to him?

Got a new coworker who I find extremely sexy. He flirts with me (strong eye contact, goes out of his way to touch me, teases and challenges me, etc) I'm not sure if he's really attracted to me or it's his personality. Either way, it totally gets to me and I can't think straight and am so clumsy. Every time something awkward happens because of this, I feel so embarrassed, as I am married and I really don't want to look bad at my job. But there's this sexual tension nonetheless. Driving me crazy.
Can guys tell when they are doing this to a girl? Is he playing me? Does he want to f*ck? What's going on?
Does my hot coworker know I'm attracted to him?
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