Lily Allen has sparked concern amongst her loyal fans after she seemed to unfollow her husband of three years, David Harbour, just a month after marking their anniversary.The UK pop sensation, 38, married Stranger Things actor David Harbour, 48, in a Las Vegas ceremony in 2020.The couple were reportedly pictured most recently in September as they attended a dinner in New York together.Then Lily celebrated their third wedding anniversary by posting a sweet snap from their wedding day with her 1.6 millions followers. So the apparent social media snub has come as a shock to eagle-eyed fans, who took to X - formerly known as Twitter - to share their concerns. Lily's unfollow could have been a mistake - especially as it comes just a month after she reminisced over her special wedding day.