Feels like I don't love my partner anymore

TW for anyone, I hate posting on here but I like to seek out advice from people because I want to know if I'm truly not alone on this or if it's true or not because I don't know, I would just like some advice, whenever I'm with my girlfriend I feel absolutely nothing. My thoughts don't feel intrusive anymore, but I want to be with my girlfriend, I think? I can't help but contradict myself everytime i say I love her. It's hard to tell myself that I love her anymore, I'm scared i guess, I feel like I might end jt soon but I don't want to and even typing that gives me anxiety. Maybe this is a rant or a vent. But I don't know anymore. I'm not sure why I even care. I love her a lot, she's an amazing woman. I don't want to lose my best friend. But it feels like j need to let go sometimes. But I don't want to, I want to keep going but it feels like I don't want to anymore. But I want to??? It just sucks, I don't know if this is ROCD and I can't help but give into my impulses on searching things up I would love some advice if I should stick it out or not. 3 days ago I had clarity that I loved her, but now it just feels like it's all a lie and I'm just wasting my time but I don't want to feel like that because this is the one relationship I want to work 😞 I think? I hope. I'm worried. I can't stop worrying. I just want some advice. 😞