Summary of part 2: The bride’s sister announces she’s pregnant and everyone congratulates her and she’s really smug about it, but then the bride says some line as a cue for her sister’s ex to walk in, who she had dated before her husband, it’s explained that the sister had been 2 timing her ex and husband for at least 6 months and that she was also still keeping in touch up until a few weeks prior. The ex basically says this to the husband but in a way that makes it seem like ex thought he knew (btw, the ex is stated to be a nice person and that they had to be convinced to partake in this) husband starts yelling at his wife, parents get mad at the bride, they and a few others leave and the wedding continues