can someone please translate the following?

It pretty much means something like this:
And then, I was ignored. At that time, I thought I heard a voice. I guess S-san had been waiting with his/my friends. When あなた joined with my/our friends, while looking at us and saying something, I laughed after that. At that time, I did not know what あなた were saying but......

(Note: My translation may not be perfect but it definitely drills down the main points in the passage.)

Hope this helps.