Developing feelings for someone new while attempting to move on from a past relationship.

It's been a year since my four-year relationship ended, and every day since has felt like a challenge. I can hardly believe it's been this long. The breakup was intensely painful, and not a single day goes by without thoughts of him and the sorrow he left behind. I've prayed countless times to let him go and move forward, but it hasn’t been an easy process. In the midst of this struggle, Phil, a friend from high school, came back into my life. We had already reconnected before my relationship fell apart, but he became my anchor in the aftermath. We bonded over our shared experiences of heartbreak and many other topics, and he turned into my pillar of support when I felt like I couldn’t rely on anyone else. The loss of mutual friends with my ex made Phil's friendship even more significant to me. As time went on, Phil and I grew exceptionally close. With him, everything feels effortless—comfortable and safe. We share so many laughs, and it’s been a long time since I experienced that kind of joy. However, I’ve started developing feelings for him, and that scares me. Given what I went through, the prospect of opening my heart to someone again, even someone as wonderful as Phil, feels risky. I’m terrified of losing him, too. I don't intend to admit my feelings anytime soon. The fear of losing yet another close friend outweighs everything else. Still, I'm struggling to figure out how to handle this situation. Oddly enough, despite everything my ex put me through, a part of me still holds onto love for him—the connection was so deep, and he was my first love. When I like Phil, I feel guilty, even though I know it’s not wrong. I also question whether Phil likes me back; there's chemistry sometimes, but I'm hesitant to let myself feel it fully. I've started to distance myself from Phil, though I worry that might hurt him. What should I do?