Hello again. Thank you for clarifying.
But I'm sorry to say that the answer to your question is no. First and foremost, the billionaire is not liable for the actions of his security guard since the security guard was not acting within the scope of his employment when he seduced your wife. In other words, he was not furthering the billionaire's agenda. More importantly, however, is the fact that Florida would not allow recover anyway, not even against the security guard himself:
"Previously existing rights of action to recover sums of money as damage for the alienation of affections, criminal conversation, seduction or breach of contract to marry have been abolished by statute. In enacting the statute, the legislature has determined that the best interests of the people of Florida would be served by the abolition of such remedies. The statute expresses the public policy that domestic quarrels should not be the subject of damage suits and jury trials." 25A Fla. Jur 2d Family Law § 489.
Accordingly, you would not be able to win a lawsuit against the security guard, and if you could win against the security guard, then you would not be able to win against the employer (i.e., the billionaire). An employer can only be liable if both of these are true: (1) The employee acted within the scope of his employment when the act was committed, and (2) the employee himself could be held liable. In this case, it looks like neither is true.
I am truly sorry that my answer is bad news for you, but please understand that it would be unfair to you (and unprofessional of me) to provide you with anything less than an honest response. However, if your concerns were not satisfactorily addressed, then please let me know, and I will be happy to clarify my answer.