Lauren was definitely made out to be the unreasonable one. "The Runaway Bride". But having seen snippets of Andrew's personality I could believe that she saw something that worried her that made her take off. Sure, she could have messaged him to let him know but I don't believe she's the bad guy here.
I felt sorry for Susan when they were asking if she felt she could give up her lifestyle at the commitment ceremony. Why in hell should she? So many of the men saying "I can't move" yet expecting the women to leave their lives, jobs, families and all that is familiar. If the producers really wanted to find long term matches you would think that distance and lifestyle would have been a serious consideration in compatibility.
I really don't like Anthony. He comes across really badly. When he talked about the possibility of committing and it now working out he described that he'd be left feeling "let down". Not upset, not heartbroken, but let down. By Nadia? By the programme? I think he sees it as a game that he wants to win.
I felt sorry for Simon when Alene's friends were asking questions about intimacy etc and it seems reasonable to me that he might not want to discuss that with people he hardly knew. They weren't trying to get to know him, they were just trying to find out personal stuff and I think he handled it really well.
Oh, and the song on the beach? C-r-i-n-g-e!! It might work in rom-coms but in real life that stuff is just too cheesy. It was clear before he forced her to kiss him that she didn't want to kiss him. I don't like him at all. That being said, her dad was a first class dick. It's like the old trope of "protective father sitting with a shotgun on the porch".