I need to know if it's essential to have both myself and my fiance's name on a tenancy agreement as proof of living together before we get married as a supporting document for the spouse visa? I was going to move in with him but his landlords said for some reason that he can't put me on the tenancy agreement

Is there anything else we can show as proof of living together that's NOT a tenancy agreement with both our names on it?
Or does it not even matter if we don't have proof of living together before we get married?
If a tenancy agreement proving we have lived together for a while before getting married is important proof, then we will move somewhere where we can have both our names on it

Much thanks in advance for replies
