It's good to refrain from commenting on how people look.
Lin has taken notice of how attractive a coworker is looking today.
Lin wants to talk with the coworker.
Lin approaches her coworker and makes some small talk with him.
Lin walks up to her coworker and compliments him on his appearance.
The coworker is happy to take a break from work to talk with her.
The coworker feels embarrassed and the situation quickly becomes weird.