Why did you did this?

I  do not understand and I really would like to know.

What was my purpose for you?

Everything just seems a lie and all I really want is a truthful answer from you.

If you have a conscience then please let me know

It is the least I deserve.

Why did you did this?

Bunu neden yaptın ?

I  do not understand and I really would like to know.

Anlamadım ve gerçekten bilmek istiyorum.

What was my purpose for you?

Senin için amacım neydi ?

Everything just seems a lie and all I really want is a truthful answer from you.

Her şey yalan gibi görünüyor ve senden gerçek bir cevap istiyorum/bekliyorum. ("bekliyorum" is better word for this sentence)

If you have a conscience then please let me know.

Eğer, vicdanın varsa, bana söylersin.

It is the least I deserve.

Sonuçta, bunu hak ediyorum.