Don't you love this Love/Hate emotion?

So I was talking to Sarah about this guy she liked. She really liked him than other guys, but I don't get why.
So I asked her, "Don't you love that emotion when you hate seeing other girls around that one special guy, but you love it since you know 'yourself' cares for that one certain guy? Out of all the people in the world, you pick just that person." Her response, "Yes.."
As we were waiting in the car, in the dark night, waiting for her mom. I sat there, thinking to myself, "Tcch...I love that feeling too, but it also hurts..."

"When you are in love and you get hurt, it’s like a cut... it will heal, but there will always be a scar."