One of my coworkers is getting married in October so we have become pretty close since we were both planning a wedding. She came in my office this morning and told me something that was a little too TMI, but it got me curious. She apparently has contracted herpes from her FI, but he swears he doesn't have it. She says she hasn't cheated, and I really believe her. I know she wouldn't. Is it possible for her to have gotten it from him and they don't even know it? Isn't that something you would know if you had it?