The Surprise Triplets (Harlequin American Romance Series #1515)

Triple The Trouble 

When fertility counselor Melissa Everhart decided to have a baby on her own, she didn't anticipate triplets…or her ex-husband's return to Safe Harbor. Three years ago, Edmond's reluctance to have children tore them apart. But now that he's been made guardian of his niece, Melissa witnesses how tenderly he cares for the little girl. 

Though Edmond doesn't believe he's father material, his sudden custody of Dawn leaves him little choice. He turns to Melissa, the warmest, kindest person he knows, for help. They begin to rediscover the love they once shared, but the betrayals of the past trouble them both. Can they find the forgiveness they both need to come together as a family?