Why?

My straight work colleague Andy has just come down from doing a job on one of the floors and while he was in the lift, a member of staff was eyeing him up. Every time Andy looked at the guy he looked away, and then when the guy got out of the lift he said to Andy, "Have a nice day!" He obviously liked him.
Why does this never happen to me? There are tons of gorgeous guys who work here and none of them ever even take a second look at me! To quote Kevin Patterson, "It's so unfair!"
Obviously Andy must look more gay than me!!