School security man stalking?

Well i have been with my girl for over two years and we r seniors and high school well we spend a lot of time together [closeted about our relationship] but people have said many rumors of us being together. we act like best friends but it still goes around even tho we say we have boyfriends.......... well this security guard keeps bothering me and my girl and telling my im a lez because the side i pierced my nose which i think is dumb because firstly im bi and secondly i just picked a side..... then he told us why were always together and why dont we have boyfriends and where do they live and all this personal stuff which really offended me ... should i report this to the office that we feel comfortable or should we let it go [ he has worked there for years and i dont want the school telling my parents of the rumors because im closeted to it] thank you