The Husband by Christopher X Sullivan

Two years after committing to each other, Chris and Mark are pushed into a new adventure: parenthood.
Their journey will be long and full of both heartbreak and joy. It will test the two men as nothing has before.
In this installment, Chris and Mark meet Alex, a child whose parents cannot be tracked down immediately. Chris cannot stop imagining the child going through the system alone, but is still reluctant to work towards foster guardianship because there is too much uncertainty surrounding the child.
However, Mark won’t let him give up and together they work through all the obstacles that come their way.