When I get deeply emotionally attached to my data analyst, I might care if they’re moonlighting on the side. Sex, work or not, is still an emotional topic for most of the human race and it’s not new knowledge to anyone.

Enough that it would not naturally occur to me that “please do not engage in prostitution while we’re together” needs to be said out loud. I will casually ask if you’re monogamous and if you say yes, that’s how monogamy works.

Even aside from that, yeah, tbh, I would consider it good form to let your partner know you’re considering a new job regardless, just so they generally know what’s going on. If you have to hide it, maybe something is wrong.