Will rectal use of lemon help preserve marriage?

Better, of course, for a start, to figure out what the original, hidden, cause of the problems is. In a calm atmosphere, talk confidentially. If it's just a matter of emotional stress from the refusal of you or your partner to use lemon, then, of course, there is a chance, but, I suppose, no more than from kiwi or orange - although you can use anything, as long as by mutual consent, it is still better sexual games to choose special devices, from the point of view of medicine, more suitable for these purposes, so as not to harm.
But if the fact is that your partner behaves inappropriately with you, then feel free to shove him a lemon where you deserve it and leave him to think about his behavior.

I don’t think if it’s one of your partner’s sexual desires. In general, it all depends on the purpose for which you will do it. Maintaining a relationship of trust and frequent communication with each other will be more effective in maintaining a marriage. Much more effective than lemon, you know.