Be reluctant to leave

Be reluctant to leave
流连忘返/依依不舍

例句：We're reluctant to leave this beautiful place.
我们对这个美丽的地方流连忘返。

We're reluctant to leave him.
我们对他依依不舍。

不愿意离开

The child was reluctant to leave her mother.
这个孩子不愿意离开她的妈妈。

不情愿的 离开了
或者
不情愿的 留下了