The Perfect Gift (Three Wise Men #1) by Serenity Woods

This story begins on the internet, where Brock meets this single mom whose kid has asthma. They develop a repertoire and start chatting in a private forum. He wants more and they find a way to meet face to face. After meeting, Brock knows that he wants more, and decides to give Erin time away from being a mother and takes her away for Christmas to an exclusive hotel. She accepts and finds that Brock is everything she ever dreamed a man could be.  This story makes you believe that second chances are possible.