Michael Strahan is incredibly in-demand and is balancing many projects on the go right now.MORE: Michael Strahan's replacement revealed in hilarious postThe GMA co-anchor not only fronts one of the biggest American morning shows, but is also a successful businessman.However, first and foremost, he is a devoted father to his four children, who are growing up fast!VIDEO: Michael Strahan's family - all we know about his life away from GMADuring an appearance on The Drew Barrymore Show this week, the former sportsman gushed over his youngest daughters - twins Isabella and Sophia - who are about to turn 18.MORE: George Stephanopoulos' actions shock co-stars live on GMAMORE: Michael Strahan opens up about working with George Stephanopoulos on GMAHe admitted that it was "tough" parenting them now that they were older, especially now that they had boyfriends."It's tough. You've got daughters and they have got boyfriends..." he began.