text: If it's a first date or something then I wouldn't say anything.  If they go out on a few dates and things look like they might be going good then I would tell them.  I also agree with telling the guy that she is on meds and she is doing well with no recent episodes.  There are guys out there that are caring and considerate.  If this scares them off then they weren't worth the time.  Good luck to you sister!