1. Never plan without the other
It does not make sense to make plans that involve your boo without first consulting him or her.
You don’t want to make plans on a prediction that’d turn out untrue and put them in an unfavourable position of either cancelling an earlier plan just to go with your insensitive plan, or to refuse to partake in it and look like an unappreciative partner.
In any case, it’s always better to avoid these scenarios.