"我们谈了两个月" 用英语怎么说??

we were together for 2 months.
(如果到现在为止还在谈，那么就是"we have been going together for 2 months.")

We discussed for two months

We have discussed for the past 2 months.

We've been going out for two months. (如果是谈恋爱的意思的话）

We've talked about this for two months.

we have dated for two months.