I have to do this. What's the name of this song?

I have to do this. This song is called "Emotion is just a joke". Lyrics: I don't regret meeting you, I just feel sorry. I have loved you for so long, and there is not even a result. I don't have to give up on you. Loving you is my choice. Giving up is your choice. I was full of you, affectionate and single-minded, and finally disappointed. But the reality is too cruel. I finally lost my heart, but you completely lost me.