Need advice… I don’t trust my own judgment anymore

I think I learned something the hard way, but I honestly don’t know what to do with it now. I had a really close friend — someone I trusted completely. The kind of person you don’t think twice before sharing things with. Looking back, I can see there were signs that something wasn’t right. They would mostly reach out when they needed something, or say things in the name of jokes that didn’t really sit well with me. But I kept brushing it off, telling myself it’s normal and that maybe I was overthinking. I was always there for them. I adjusted, made time, showed up whenever they needed me without really questioning anything. But recently, I was going through a tough time and I expected at least a little support from them. Not anything big — just a message or some basic concern. But they weren’t there at all. Not even a check-in. That’s when it really hit me. I think I’ve been putting a lot more into this friendship than they ever have. And deep down, I probably knew it, I just didn’t want to accept it. Now I feel a bit stupid for ignoring it for so long. I keep wondering if I was too available, or too forgiving, or if I just didn’t matter as much to them as they did to me. I haven’t said anything to them yet, but something has definitely changed for me. I don’t feel the same anymore. Now I’m stuck. I don’t know if I should just slowly distance myself and move on, or if I should actually talk to them about it and risk making things uncomfortable. I don’t want unnecessary drama, but I also don’t want to keep feeling like this. Has anyone dealt with something similar? I could really use some perspective right now.