Should we get a second dog?

My dog just turned 1 and she loves playing with other dogs. She is very high anxiety and has high exercise needs, so we’re considering getting her a companion dog. We also adore dogs, so it would be another sweet baby for me as well to snuggle with and care for. Would love to hear pros and cons of getting a second dog from those who have. We’ve only ever been a one dog household, so I know this would be an adjustment for all and allow for a slow and steady introduction. I pour a lot of love, affection, attention (and money) into my dog, so I want to hear just how much more work/time/expensive having a second is.