Does having periodontal disease mean that i can't have sexual intercourse with my boyfriend?

No: There is no reason why you can't have intercourse with your boyfriend because you have periodontal disease. I would advise you to seek treatment for it for your own health and potentially his if you also engage in oral sex on a regular basis.

STD: Gum disease can be considered an std. It has been reported in the dental literature that gum disease is transmissible to pets and back to humans and humans to humans. I would recommend you have your periodontal disease treated. Look up lanap on the internet.