Room in Your Heart by Julie Brookman

Bonding over super hero bandages:
Army vet Noah Richardson returns from overseas to find out that he has a 5-year-old son. He is fighting for custody but is struggling to prove he is a fit father. It’s especially hard because he really has no idea what he’s doing. By chance he meets single mother Grace Miller, who swoops in like an angel to help him become comfortable in his role as a father. Grace is recovering from her a recent trauma, and as a vet Noah is able to be the support that she needs. Together, they learn to open up their hearts in ways they never thought possible. But can they overcome the past when it comes back to haunt them?