Recently my best friend broke up with her boyfriend of 10 months. All through their relationship I felt a connection with her boyfriend but never provoked anything with him because they appeared to be happy. Obviously my friend was a little insecure about their relationship because she was always questioning him about his feelings towards other women and what he thought of specific friends etc...this pushed him out of the relationship and he broke up with her. 3 months later he called me for dinner. I really like him and I know that there is potential there because we share the same interests in life, are both optimistic and agree that there is a world to explore. I know my friend would be terribly heartbroken to learn that I was dating her ex but it just feels like he could be the one....what should I do?