What did Bonnie have on him? Why didn't he just divorce her?
Bonnie had nothing "on" him, he had plenty "on" her. He only married her so he could have access to his baby, whom he apparently adored.
Two things - the dreaded "child support and "child custody battle". Two things that men dread most when they are going to divorce! Every guy I know who is divorced just dreaded those two things and went thru a hell of a battle for those.