Bisexuality or something is more of a playboy. If you really decide to stay with him, you must pay attention, because he may come out at any time! However, if you decide to show your love to him, wait for him to dump his fiancee, or wait for him to complete the so-called "responsibility". Because, if he gets married and you stay with him, you may become a poor mistress and a male mistress, which is very painful to say.
So, you are still hiding your so-called love for him. There are many good men in the world. Perhaps, the love in your mouth may be just an unforgettable affection or a beautiful impression.
However, if you really love him to death and know him better, just confess! Confess or not, but this is the last thing to say.