Would it really be a relationship if they weren't attracted to them/that gender though? What's the point of dating if you weren't interested in the first place?
Considering the main point of many people who are gay talking to their families, many of who say things like "oh I think you're not really gay" (something my gma has said), or "maybe you just haven't found a guy/girl you like"... There are some people who /know/ what they like, and they aren't interested in anything else, and they shouldn't be encouraged to do differently no matter what that knowledge is (pan, demi, ace, bi, homo, hetero). If you /don't/ know, then by all means explore (so long as the people you're with are aware that's what you're doing), but don't try to talk people out of their own identification. It's pretty annoying, and kind of insulting...
Is that anything like "an hero"?