What even is life anymore?

Sometimes I wonder what even is life...

We broke up, I know that there is a 0.01% chance of it ever working out again yet I still love her.

I know that there are so many better girls than her but I still love her.

I know that she maybe wasn't the best for me but I still wonder.

I know that there are many girls that'd give me an easier time and love me the same if not more but I still love her.

I know that she has problems which will ultimate slow me down in the long-run yet I still love her.

HOW is it fucking possible for someone to know and have realized all of that and still love someone.

To the point where I'm ready to do anything for her. I'll die for her...

How is it possible for a human being to be so in love with another person that they know isn't good for them, yet they still desperately want to be with her and would do anything for her?

I don't care what I'd have to go through. I'd go through anything for her... Why do I love her so much?