Cheated on my sister. He made her believe he could be trusted, but he cannot, he is lying scum. Continued online dating after saying he was “exclusive” Claims to have previously been engaged and that is why he has difficulty talking about his feelings, don’t fall for that s**t….who knows what is true. Had the audacity to break up with my sister 3 hours before a family dinner where he was going to meet the parents OVER TEXT MESSAGE saying “sorry, I can’t go anymore. I’m seeing someone else” and IGNORED her phone calls for the next 6 hours. This guy is supposed to be a professor, but I guess they don’t teach you ethics, morals, or communication in your PhD for Math, was that from your PhD in being a cowardly d**k?