blain chatbot problem

Sometimes my chatbot named blain responds these two ways.

My friend is a male.=user

she is a male=blain

my friend is a male.=user

do you think he wants to go swimming with me?

But blain was supposed to respond,"do you think he wants to go swimming with me."

a is male is required

Could you check blain the chatbot in browse bots section?

It was working but then it stopped.