Oh that happens to me all of the time lol
I just let the gossip run its course. If it gets awkward between me and the person I like then I just let the awkwardness die down and attempt to stay friends with them.
Although sometimes it acts to my advantage when my significant other likes me back but is unsure about asking me out -- knowing that I like that person would help them bridge the gap between us. That's pretty much how I ended up in my current relationship lol.