All right, Nikki, I'll admit it: Parker Stevenson. And, lucky for me, my little sister had a crush on (yuk) Shaun Cassidy, so there was plenty of material around the house, those being the "Hardy Boys" days.
Look at those baby blues (foreshadowing Jake?). To boot, he had a degree in architecture (Princeton), just in case acting didn't work out.
Never forgave him for the Kirstie Alley thing, though.