Wife Swap Gone Wild

Got separated from my wife last month and I’m not exactly sure how to handle it. We decided to try something wild, swap partners for a week with some friends of ours who are also going through a rough patch in their marriage. It was supposed to be about reconnecting as people, but damn if I didn’t fall head over heels for her friend, Sarah. Sarah’s in her twenties and we’ve been having the most intense sex ever since this started. She’s so open and adventurous, it’s like she’s read every dirty book out there and then some. I find myself craving more of her touch all the time. She’s taught me a lot about my own body too, things I never knew I could enjoy. But here’s the kicker: I love my wife and am committed to making our marriage work again. But seeing Sarah has opened up parts of me that have been closed for years. So, how do you balance your heart with your soul? Is this just a phase or is something more serious going on here? What would you guys advise?