My (23F) boyfriend Jake (25M) and I dated for a year. Everything was great until his ex, Sarah, moved back to town. Suddenly, he was "busy" every weekend. Then he stopped answering my texts altogether. His best friend, Mark (26M), was the one who finally told me the truth: Jake had gotten back with Sarah and was too cowardly to break up with me properly.

Mark and I started hanging out as friends—he felt guilty for not calling Jake out sooner. But the more time we spent together, the more I realized how different he was from Jake. Where Jake was selfish, Mark was thoughtful. Where Jake flaked, Mark showed up.

Six months later, we’re officially dating. Jake found out and lost it, calling me a "backstabber" and Mark a "traitor." But AITA? Jake was the one who left me in the dark—Mark was just the one who turned the lights back on.