I'm a married man, I don't know why in my heart I fell in love with a new female colleague in my unit, she is also married, what should I do?

Anyone, her advantages are lovely, then you like her, and there is nothing wrong with it.

As you said, just like, just like, just grasp this like the proportion. Sometimes, between friends of the opposite sex, also contains appreciation and like, take her as your friend well. Care for her, bless her.