Can a couple, living in one household, sharing one pet, have separate Rover accounts?

I'm not sure having two profiles would accomplish what you are attempting because when a client searches for a sitter in their area they're pulled up a map and a list of names, meaning they may not notice that two sitters are pinned at the same spot on the map (or if they do they might think you two are neighbors). From the client's point of view they are likely to think it's just you (or just your partner) and be unaware of the second person involved until the meet and greet (or the first chat conversation). However, you could potentially get double the work, since someone might like their profile better than yours, or yours better than theirs.

That being said, I'm totally jealous. I'd love to have a partner to team up with! :)

Hey Laci - many couples decide to have a joint account and background checks are required for everyone on the account. I would believe having two accounts will be more trouble than it's worth is you are sharing the work and clients. Best of luck