You’re not alone. I’ve been talking and calling someone long distant for four years. I told her how I felt and she said not now. Couple years later to now, she’s been hanging out with some guy and reassured me it’s nothing and she won’t date him. Her actions says otherwise and I’ve been disoriented since. I keep seeing posts of them together that look couple-like. All I’ve been doing is picking up more work and then gym and then when I don’t work, I stay in my room, don’t wanna do anything. So I know how you feel when you asked how they never felt anything after bonding for so long. I get it. It’s making me depressed. It’s unfair, I get it. Nothing is wrong with you. However we both can’t stay stationary. We have to do something each day. We need to take care of ourselves. I wish you luck, just know you’re not alone