How do you say

We\'ve known each other for two months, and we started dating last week.

..in Chinese?

我们认识有两个月了,上周开始在交往。

wǒ men rèn shí yǒu liǎng gè yuè le , shàng zhōu kāi shǐ zài jiāo wǎng 。

How do you say "We have taken up gardening lately, and spend a fair bit of time every week tending to our backyard plants." in Chinese?