Then There Were Three (Harlequin Superromance)
Jeanie London

Nic was crazy about Megan in high school...until she vanished from his life with no explanation. The bigger secret, however, isn't the daughter he didn't know. It's Megan and how he "still" feels about her. She's more beautiful now and even more of a temptation. Suddenly the man who wanted to drop commitments is looking for ways to tie himself to Megan...permanently!