Here is the full list of all 21 Confess My Love achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
...So you leaved.
We can still be friends.
Have we ever met before?
But it doesn't even exist!
Just leave me alone, please.
You don't have to speak it out.
Do you have an interest in zodiac?
But we don't match.
I have a boyfriend already.
We shall focus on school works.
To be honest, I'm a lesbian.
Julie, let's go.
...Anything happened?
What were you about to say?
If you understand why I refused.
That's how you see me huh?
Come back! COME BACK!!
You love me, don't you?
What's wrong with you?!
Now you remember who hurt me?
Thank you for your cake, Mr. Who.