Coming out of the closet is turning into a social phenomenon.

A woman named Michelle Conway McClain learned her son, Zach, was bisexual when he came out on his Facebook page.

Being the supportive mother she is, she responded by reaching out with a letter of her own on Facebook, which you can read below. The kind missive has since gone viral:

Facebook

In her update, McClain explained, "I didn't get to talk to him before I left for work today, so I left this on his bedroom door."

Way to go, Mom!