Kristin Cavallari tried “everything” to rescue her marriage. The 37-year-old TV star split from Jay Cutler in 2020, but Kristin insists that she did everything she could to save their romance. The blonde beauty – who was married to Jay between 2013 and 2022 – said on her ‘Let’s Be Honest’ podcast: “My heart broke in my marriage. Even though I’m the one that walked away, it was not what I wanted. It was not what I had envisioned. “And I really tried f****** everything I could. It’s just heartbreaking when you want something so badly but you just can’t get there. And I would say my heart was bro…