"You can leave at any time babe, if you want your best friend to be around, she can stay with us if you want her to.  This is not just a fling, we won't break up.  Being a bachelor has been fun but being in a relationship is so much better.  You look good in my clothes and if you are worried about using all the hot water we can share."

He says with a sly smile at her.

"I won't get tired of you, you know that."