Romantic novel with an astrological aspect

Scorpio man
Dr. Luke Manning had no intention of falling in love, but when the precocious kids next door led him to their mother, Emily Cornell, marriage didn't seem like such a bad idea. The beautiful young widow had so much to offer – and he had so much to give – except his heart. He'd lost that long ago...

Cancer woman
Luke was the man of Emily's dreams. He was kind, supportive, wonderful with her children – and he just wanted to be friends. Married friends at that! But Emily had more than a marriage of convenience in mind when she said yes. She wanted love – she knew Luke was just the man to give it to her. If only he would say "I do" to their cosmic attraction