@Confusedandshaken
The Megan/Bob thing seems like such a fuss about nothing. They aren't actually married FGS! They are two people who've known each other a few days. She snogged someone else and then clearly regretted it. Probably when she saw his horrible little thumb face in daylight.
No they stood and made a commitment to each other as though they were married. So you commit yourself to that person doesn't make it okay to go off and snog someone else.
Otherwise why is it married at first sight if they don't act like they are married.
End of the day she did cheat on him. If it was a dating show and this was their first week maybe