I feel you may have hit the nail on the head. It was a serious, committed relationship on my end and I saw a future and didn’t necessarily hide that fact.

She did to an extent too but I feel once the honeymoon period had ended for her and reality began to set in, she got scared of such serious commitment.
She’d expressed that she wasn’t ready for something so serious and I had agreed to give her more space to herself between the first and second break up but whenever I would do that, she would get upset at me like I didn’t care about her. A lot of mixed signals from someone who I still believe doesn’t know what she actually wants.

I believe that has been part of my struggle. I feel she had led me to believe she felt similarly to me and I felt safe to express my more serious emotions but then she realised she wasn’t ready or it wasn’t what she wanted/needed right now and she was able to remove feelings and I’ve been left stuck trying to resolve the feeling of having lost someone who I thought could be “the one”