I am a flirt?

Jordan
I just found out there have been many, many, many rumours about me either having a crush on or having a thing (generally just sexual) with many of the people I hang out with. On reflection I do understand that the way I interact with my friends could be interpreted as flirty from outsiders but I have NEVER intentionally flirted with anyone, have never liked someone romantically, and am just a physically intimate who fucks around making suggestive jokes with my friends. I knew about one or two rumours but I didn't know the magnitude. But now I'm afraid that people think I'm flirting with them when I am very much not. I am not a flirtatious person, and would be uncomfortable if anyone had the wrong idea. Has anyone else had this? What do you think I should do?
(Btw I'm 17 and am graduating HS this year. Does this stuff happen later in life?)