Rosa, She's just someone new and who knows what kind of BS she's been filling his head with over the last year. She stroked his ego and made him feel special. He may have talked to her about things that he should have been talking to you about.
I can assure you...she's a long step down from ever being you. Mlcers generally affair down, not up. He may feel far more superior w/her than he was w/you.
I understand the question about what does she have than you don't...but it's nothing more than something new and different, along w/the fantasy of la la land.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
