You wouldn't leave your queen with Lancelot
I'm sorry but if anyone, including Merlin, came to you and said, 'Hey, you are going to be away for a few years and I think the person to look after you wife is (Jeremy Sheffield)' you wouldn't agree (ok, maybe in real life, cause he will be looking at the husband more than the wife. There isn't a woman on the planet who wouldn't fall for him, that's just dumb.
I have done horrible things... and I have absolutely no regrets.