The Manning Brides, by Debbie Macomber
 
The Manning Brides(©2008)

by Debbie Macomber

Rich Manning and Jamie Warren have always been friends—and nothing but friends. However, that changes when she asks him to father the child she so desperately wants. Rich agrees—if she'll marry him. Because he thinks their Marriage of Inconvenience could become a real marriage instead.
      Paul Manning, a grieving widower with three small children, turns to Leah Baker for help and comfort. When that comfort begins to grow into something else, Paul discovers that he wants more than a Stand-In Wife.