Sheldon was blinded by being dumped, but he didn't know in his heart that he was actually giving up, so he panicked and called Leonard to vent his panic.
Not everyone was invited to the wedding, others watched the wedding live on TV. In order to find Amy, Sheldon went to Howard's house to watch the wedding with everyone, but he was still very proud.
However, in the bridal chamber, Leonard voluntarily admitted to kissing his colleagues during business trips and explorations. With the embellishment of Schell, the first episode ended with two people breaking up just after they got married.