Is it worth trying reconciliate the relationship?

so I'm trying to reconciliate with someone who I haven't talk for about 3 years. I felt amazing around this person (very neptunian). Unfortunatly, It ended abruptly(like many of my relationships), in such way that the other person was so confused and angry. Where to look at if it's worth fighting back to a relationship?

Would it be aspects in synastry or in composite?
Can't have any horaries or event charts... so yeah.
I would love pretty much any tips/experiences.