need advice on girl was seeing

So ive been subbed to this of creator since June of 2024 up tell recently but me M24 and F19 both got along and we were getting closer but she wanted wait tell July to even tell me if she was going to give me a relationship since she told me in December she was considering it but I recently found out she was seeing a guy and has a bf now apparently... this was long distance too btw but just feel sad and lead on really, and wanted share my story. We pretty much had a falling out because she wasn't putting any effort in for me