This dilemma had stalled Leonel for a long while. No matter what, he didn't even think of taking the easy way out.
With 20 years left, even if he didn't force a Sea Goddess to lie in his bed, it still wouldn't be difficult, not to mention leave with enough time to still try several times to birth the child that he needed.
There were certainly plenty of men who would have done it. No one ever accused Sea God women of not being exceptionally beautiful, but Leonel simply had no interest in taking such a step.
In his opinion, part of protecting his wife meant protecting her heart. That was just as important as anything else. It was the very same reason he was so enraged every time someone slighted her, even in the smallest way.