Donnie Wahlberg may have an unhealthy attachment to his mustache

The New Kids on the Block member and star of CBS drama “Blue Bloods” has apparently been growing quite the lip tickler over the past three months and may or may not be shaving it off in the presence of four other mustachioed (and shirtless, in some cases) men.

Prior to posting this picture, Wahlberg also tossed up these not-so-subtle-hints of his affection.