Stumbled on this article and I thought it would be useful to share: http://www.tutorming.com/blog/index.php/how-to-say-i-love-you-in-chinese-actually/
Here’s a chunk of it to summarize how to say I love you (and a few other sweet words) in Chinese:
520 (wǔ èr líng) = 我爱你 (wǒ ài nǐ) “I love you.”
530 (wǔ sān líng) ＝ 我想你 (wǒ xiǎng nǐ) “I miss you.”
770 (qī qī líng) = 亲亲你 (qīn qīn nǐ) “Kiss you.”
880 (bā bā líng) = 抱抱你 (bào bào nǐ) “Hug you.”
1314 (yī sān yī sì) = 一生一世 (yī shēng yī shì) “Always / forever.” Often combined with 520 so that it becomes 5201314, or “I’ll love you forever
