Imagine having to go through puberty, early adulthood and beyond living a lie that betrays your true identity and serves as a roadblock to a fully loving relationship with another person. Consider the fact that your ex's sexual orientation was not established during or after your relationship – it's always been there. He likely was trying to come to terms with it during your relationship, not using you to decide whether or not he was gay. There are a lot of variables to consider when gay people decide to come out of the closet to their friends and family. They may be rejected by the ones they love most – and that fear may keep them in the closet, living out the lie they assume everyone expects of them. It's a courageous step your ex is taking if he opens up to you about the situation. Of course it's OK to explain that you feel hurt by his dishonesty, but consider why it was necessary before you cut him off.