I saw a girl studying at a coffee shop and I thought she was beautiful.And a couple of weeks after I'd seen her studying at the coffee shop,
I saw her dancing really hard at a club, in which I thought she was so attractive.
I saw her dancing really hard at a club, when I thought she was so attractive.
I saw her dancing really hard at a club and at the moment, I thought she was so attractive.
I'd like to know if all of these sentences are the same meaning.