I regret getting a puppy and I don't know what to do.

I'm very sorry to hear that but I think you shouldn't include the dog with your relationship problems with your boyfriend. First thing is, if you really arent a horrible person, you wouldn't let your dog be a problem, hence, just learn to love him. You should not think negatively about what future that dog will lead you into. You must know that everything happens for a reason and you might not expect that your dog will be a blessing in disguise. No dog would give you a horrible time if you would love and accept him. Give him a chance. Maybe your plans aren't really for you that's why all this is happening. Don't fret my dear and I hope you finally decide on keeping that dog for good.