What is Lu's confession in the last episode of ipartment?

Wan Yu, there's a sentence I've been holding in my heart for a long time. To tell the truth, I have been moved by you since I first saw you on the airport bus. I don't know when I am happy when you are happy, I am unhappy when you are unhappy, I am excited when you encounter difficulties, and I am sad when you laugh. I'm sorry I said the opposite. Wan Yu, can I chase you?

Finally,

I've been thinking for a long time, and I have a thousand words to say to you, but I don't know where to start at the moment. Actually, I wrote the song "Lonely Roots No.3" for you. I only wrote in the middle. I know I didn't write well, but please allow me to finish it.

I'm scared.

I will always be the root of loneliness.

How wonderful the number three itself is.

These three of mine

Why are you hiding under that ugly root number?

How I wish I were a 9.

Because nine only needs a little operation.

Can get rid of this cruel fate.

I know it's hard for me to see my sun again.

It's endless like this

1.732 1…………

I don't want my life to be so sad.

Until that day.

I saw it.

The other root is three.

So beautiful and flawless

Aaja Nachle

We multiply each other.

Get the dream number

Perfect integer

We break the chains of fate.

Gently dance the wand of love.

Our square root has been solved.

My love, reborn

I can't promise you a fairy tale world.

There is no guarantee that you will grow up overnight.

But I promise

You can live freely and happily forever like a princess.

Wan Yu, can I chase you?

I hope this is what you want. It would be my pleasure if I could help.