Feeling Tested Beyond My Limits

Assalam Alaikum, I understand that Allah puts us through trials to strengthen us or to grant us rewards later, but I keep facing a test with a sister I had feelings for, even after I've done everything to remove her from my life. She mentioned she doesn't interact with non-mahram men or engage in improper relationships, and I deeply respected that because I hold the same values. When I first spoke to her, I didn't realize my actions were not permissible and stopped immediately. Yet, I kept reminding myself, 'She said she doesn't talk to men, so I'll trust in Allah.' Gradually, I learned more about her character-she interacts with many men, but that's not what troubles me. What bothers me is that I can't seem to get her out of my thoughts. For nearly six months, I've been patient, avoiding any contact, not mentioning her to anyone, and not even glancing her way. So why does this test persist? Why do I still feel so attached? Honestly, she truly transformed me as a person. I'm grateful for having met her because she inspired positive changes in me, but it's time to move forward since she isn't aligned with what I seek in a spouse. Why can't I let go? I've made so much duaa, exercised patience, trusted in Allah, and drawn closer to Him, yet I still struggle to move on.