açıkcası ayrılalım dediğimde senin bu kadar hevesli olacağını tahmin edemezdim. meğerse sen dünden razıymışsın ama ben vazgeçmedim ve yine senden vazgeçmiyeceğim. bu artık hangimizin daha çok sevdiğini gösterir umarım.
To tell the truth, I couldn't suppose that you would become that much enthusiastic when I said we would break up. It seems that you jump at it. But I didn't give up and I will never give up on you. I hope this shows who of us loves more.
I wouldn't suppose ---> I (never supposed/ didn't suppose/ couldn't suppose)
you became --> you would become
we shall break up ---> we (were going to/would) break up