Dog walker

My bf and I are moving in together. We don’t even have a dog so idk why we are fighting about this but he wants to get a dog walker if we get a dog on mon, tues, Wednesday. Like give them a key and have them come walk the dog. I feel super uncomfortable giving anyone my key and being able to come inside. That just absolutely freaks me the fuck out. Of course I care for the dog but I just feel really uncomfortable with this and my bf doesn’t see why. Am I in the wrong? What are other solutions?

He’s home Thursdays and Fridays. I work ten mins away from the apartment. He works an hour away. We both work very long days but sometimes I get out super early.