If not pressing libel charges makes you suspicious, doesn't not pressing sexual assault charges make you suspicious too?

If I were the guy and not guilty, I wouldn't really be all too interested in pressing charges, mostly because I'm too lazy and I hate lawyers etc.

EDIT: Now that I think of it, actually I would probably end pressing charges, but my initial reaction would be that of "wtf, why do I have to summon lawyers because someone did something stupid", with emphasis on the wtf.