A blind date

Yesterday my elder female cousin had a blind date, i went to the cafes with her. In the washroom,my cousin told me she didn't like this man, After much thought, we came up with a solution......
When the man and my cousin talked about what kind of person they like, my cousin said actually she didn't like male, then the man blushed, "I did" he said.....～(￣▽￣～)(～￣▽￣)～

昨天陪表姐去相亲，卫生间里表姐说不太喜欢那个男的，于是我们商量好计策。聊到喜欢什么样的异性的时候，表姐华丽丽的来了句：“其实我不喜欢男人。”然后，那男的的脸刷一下就红了，不好意思地说：“但我喜欢。”然后，剩下我和表姐在风中凌乱了

Yesterday, my cousin and I went to a cafe where she had arranged a blind date.

In the washroom, my cousin told me she didn't like this man.

After much thought, we came up with a solution......

When the man and my cousin talked about what kind of person they like, my cousin said that actually, she didn't doesn't like male men. then The man then blushed and said, "I did I prefer men too" he said.....

After that, we were left dazed and a bit lost./After that, we were left dazed and lost for words./After that, we were left rather speechless./After that we were left flapping around. (然后，剩下我和表姐在风中凌乱了 - "flapping around in the wind" is the best translation. Nowadays, it is rare to use "in the wind". I don't think American English will commonly use "flapping around" and even now, I haven't heard it used often in conversation. In written form, it is fine to use and in my opinion, "flapping around" gives a very British English feel)

After that, we were left totally dazed and lost for words. (This version gives emphasis)