Acting is emotional prostitution at best, and actual prostitution at worst. If you aren't comfortable with that, then don't get in a relationship with an actor. No point burning your relationship down later because you suddenly don't like the context of that prostitution.
what the fuck are you talking about? How on earth is something like playing Pozzo in Waiting for Godot, or James Sr in Long Days Journey "emotional prostitution"?
Is an actor paid for their labour? No. They are paid to emote, so that it can be commodified and sold for profit. Human emotion for sale. It's prostitution.
It is definitely labor. And the only unpaid work I've done in 20 years is for showreel, I definitely don't do unpaid theatre and haven't since I graduated drama school.
Learning lines (which is unpaid work before rehearsals even begin), blocking (and depending on role: combat, intimacy as is being discussed, music/song, choreography, props and costume tracks) are all pretty hard work. Not to mention 5 weeks of 10 hour days 6 days a week as a standard rehearsal process (all of which is usually done standing and moving, so generally harder physical work, longer hours and fewer days off than an office job).
To say nothing of "hell week" (tech and dress).
For us semi-pros, I'm often doing my day job around roles as well.
I mean are you using prostitution to mean "pro-stituere" ("ready" "to be sold") in which case even the most ardent captialist would agree. Or are you making an insinuation that exchanging the brane of labor-time-effort for the brane of exchange-account-value-store is somehow immoral? Because even the most barter-focussed kibbutz or shetl will eventually need to trade some kind of future (e.g. fishermen need boats before they can provide fish, farmers need to survive the winter to sow seeds in spring)