suī rán / wǒ men / zhǐ shì / chū jiāo / dàn / tā / yǐ jīng / bǎ / wǒ / dàng chéng / lǎo péng yǒu / le

虽然我们只是初交，但他已经把我当成老朋友了。

Although we are only initial acquaintances, he already treats me like an old friend.