suī rán / cái / rèn shi / jǐ tiān / dàn / bǐ cǐ / yì qì xiāng tóu / liáo / de / hěn / kāi xīn

虽然才认识几天，但彼此意气相投，聊得很开心。

Although they had only known each other for a few days, they got along very well and chatted happily.