Of course you can. Lol. Stay-at-home moms and dads are doing this exact thing. Older parents who live with their kids are, too. They're probably doing something like labor in addition to just being in some kind of human relationship, but they are effectively getting paid for friendship. It would be hard to put an exact dollar amount to this, and most people including myself wouldn't really want to write an invoice for every hug they give or minute of conversation they're partner to, but since all human interaction is effectively a transaction that is informally what's happening.