This One Night

"She had ignored his warnings....
Sherry had known there was no possibility of commitment with Rollo van Cleef. Yet she'd abandoned her principles to spend one precious night with this one man, who from the moment they'd met, she felt she'd known forever.
Even though her son was the image of his 'scientist-explorer father, she resolved that Rollo must never know about their child.
She was determined not to force Rollo into an unwanted marriage, but she couldn't stop herself yearning for the man she regarded as a soul mate..."