She made eyes at him. To make eyes at someone means to flirt with someone。

To make eyes at someone就是向某人抛媚眼。

He makes eyes at every young woman he knows! 他对认识的女生都乱抛媚眼!

I bet he also uses lame pickup lines to those women.

Pickup line就是跟女孩儿搭讪时说的话。

The typical pickup line at the bar is "Can I buy you a drink?"

还有那句老掉牙的：小姐，我们在哪儿见过吧？

They really hit it off! To hit it off means to like each other very quickly.

Hit it off 就是一见如故，才聊两句就觉得特对路!

They hit it off instantly! I won't be surprised if the girl shows off her engagement ring to me tonight!

总结如下：

第一：To make eyes at someone 是冲某人抛媚眼；

第二：Pickup line 是和女孩儿搭讪时所说的话；

第三：To hit it off是一见如故