You can never trust someone who betrays the person they married. If they can lie to their spouse, whom they’ve made a covenant with before GOD, then they can lie to ANYONE, bc it shows a lack of integrity and an extreme character flaw.
There’s a theory called "The Last Meeting." Once you and someone you were once close with have completed your journey together and learned the lessons you needed, the universe ensures you’ll never meet again. Fate quietly closes the door, making sure you never look back.