i let that happen

someone came.
i like this person's presence.
if i were a house and this person were the guest, it was like i like this person being in the guestroom
then this person started sitting on the couch in the living room
then this person got comfortable sitting on the couch. no. i let that happen

and now, just like any other couch, it's rotten from being sat on too long

should i chase this person away? because saying, "would you mind just sitting in the guestroom?" to this person is not that easy.