should i get a second dog?

so i've been thinking about adding another furry friend to our family. currently, it's just me, my partner, and our adorable lab mix, max. he's been with us for about three years now, and he's pretty much the king of the house. we've got a decent backyard and max loves running around, but sometimes i wonder if he'd enjoy having a buddy to play with. for those who've done it, how did your first dog react to a new friend? were there any unexpected challenges? part of me worries about the extra responsibility, but i can't help thinking about how nice it would be to see max have a constant playmate. any advice would be super appreciated.