A lot of celebrities have to field rumours spread in the gossip rags about them being gay or lesbian. It’s seen as some kind of dark secret that they should be ashamed of, which makes for juicy reading while you’re waiting in line at the checkout.
Johnny Galecki is one such celebrity, and he’s responded thus:
(I found this on Reddit. Apparently that was taken from The View or something)
Hit the nail on the head.