For me, even if it is your husband or your wife you shouldn't share your seed phrase with anyone there is a possibility that he or she can be interested in withdrawing your funds from your wallet without your consent and the bad part is if s/he won't admit it or even s/he didn't make any transaction from your wallet if your wallet is hacked by someone else I'm sure you will blame him/her that leads to divorce.
That's not good for relationship it is fine to share the password not the seed phrase.