Change of Plans - Dangerous Waters Trilogy, #1

Dashing heroes set out to protect the women of their dreams as they travel by boat over the Caribbean and the Bahamas, even to a clear lake in Muskoka, where romance--and deception--will take them all into Dangerous Waters. Mike and Sara didn't plan on falling in love... Determined to change his image from "Mr. Nice Guy" to "dangerous and exciting male on the prowl" after a near miss that almost had him marrying the wrong woman, Mike is disillusioned and angry with women in general.
His fiancee eloped with her boss while he was away completing a contract job in Africa, and he can only think, Good riddance! Now all he has to do is find a fun-loving woman to share his honeymoon stateroom... Sara has never been in love, but she does want a family. She decides to take a cruise so she can consider the marriage proposal of Stephen Cafik, a wealthy electronics engineer whose political career her retired state senator father is encouraging.
But someone else on board the ship has plans--ones that involve killing Sara...