Lodgers boyfriend using our address

[cosmobrown]

We have an annex which we rent out.
Our lodger, (lets call her Mary) asked if boyfriend can stay over every so often. We said yes, as long as he didn't add significantly to electric bill or wear and tear etc. All happy.
Mary's post gets delivered through our main door and we pop it into the annex. No problems from anyone.
BUT, for the second time, I have received post for boyfriend. I assume it is the boyfriend, as the initial is correct, but I do not know boyfriends surname.
I feel as though boyfriend shouldn't be using our address.
AIBU?

Fraud is fraud. return to each sender and say “not at this address”. Then tell the GF you’ll be contacting Action Fraud about this

Glad you sorted it amicably

Be abuse if Mary is a tenant then she’s e titled to let her boyfriends use her address.

Then why can’t he get his letters to his own home address???

Glad you asked

Makes life so much more simpler to just talk /ask people

If the op didn't live there then it would definitely be a tenant not a lodger. You seem confused.

Seems like it's been dealt with now anyway but knowing its nothing to do with banks or credit or debt, then there's not really any genuine danger in allowing a friend to get mail sent there.

I feel as though you don't actually know what's going on under your roof. You absolutely should sit down with Mary and ask what is going on. If boyfriend uses your address as one of his listed - and he gets involved with crime, bankruptcy, negative equity - it all affects you. It is completely unacceptable for anyone to claim your address as your own. Don't treat this as a small matter.

Why have got so triggered about lodger vs tenant? Ignore the goading lot that lurks in here. Glad you sorted 👍

I would like a Tennant, especially if it was David.

Don't get angry with ME!. I've accepted OP's word for it from the beginning. I was just addressing the question that it wouldn't make a difference either way.