Hello! Sorry to hear about your dogs. Staying with your dog in her final moments should be your priority right now. If I were you, I would tell him the truth, that I had to stand by my dog but nobody stops you from seeing this guy some other time, maybe next weekend, if you feel like it. Never lose a chance, even if you are not romantically attracted to him at first, you never know what life has in store for you. Giving him a chance over a date might make him into a man you never suspected he could become