Watch this heartwarming video chronicling the journey of a blended family as two young boys gradually come to call their mom’s second husband “Dad.”

Whitney Gadecki, a writer and grief coach from Pennsylvania, USA, shared the touching video of how her sons, Jackson, three, and Leo seven, slowly built a bond with her second husband, Anthony, following the loss of her first husband.

Whitney explained that Jackson, being younger and having known Anthony from the start, naturally called him Dad.

But for Leo, it took nearly three years, something she explains happened gently and entirely on his own terms.