I’ll start by saying all of my relationships with the spirits I work with have all been strictly business so far, so I can’t give you much in terms of marriage or romantic workings, but I do know they’re taken as very serious commitments and should be made up of two willing parties otherwise only one-side knowingly benefits from such an arrangement.
If you haven’t looked already, this thread has some wonderful information on the topic:
If you feel there might be others present with you I’d advise a cleansing/banishing if they clash with what you desire and cause you distress, in a situation like this, I think it’d be best to have a sound mind before entering a serious engagement with such an entity and to ensure they are who they claim to be, so you don’t end up a feeding ground for some low life parasite.
I do highly recommend checking out that thread, they touch on pretty much every aspect and come from a place of experience, that way you know exactly what you’re getting into.