Identity crisis

Chat with a friend of mine (who happens to be a girl) The chat was about her boy friend.
....
Friend: well, unfortunately sometimes he's a bf, sometimes gf
Prakash: oh! That sure makes it difficult, now
Prakash: If you are really concerned about what you should call urself, then ask your BF what he is.
Prakash: rather, If he says he is a gay or straight, then you are straight
Friend: hahhaha really??
Friend: in fact he's a bi
Prakash: if he says he is les, then you are one too
...