It's always fascinating finding out more about what people get up to behind closed doors, but sometimes we get a little more than we bargained for - which is especially the case with new Channel 4 documentary, Sex Tape, which sees couples with relationship issues film their most intimate moments, then share their 'sex tape' for feedback and tips.
One recent episode left viewers feeling particularly uneasy by the antics of one couple... and their unique fetish.
In the show, we met Ray, who enjoys making his wife dress up in high heels before literally walking all over him - something that is known as a 'trample fetish'.
Ray enjoys Tiffany walking all over him. Credit: Channel 4
Ray explained to the rest of the group on the programme that he'd had the fetish for as long as he could remember, but viewers at home weren't sold - with many flagging how wife Tiffany had admitted she didn't actually enjoy it.
One person tweeted: "Trample fetish on #SexTape is just wrong."
Someone else said: "Nothing wrong with a fetish as long as both parties actually enjoy it together, she clearly doesn't. Unfair that he is getting all the pleasure and giving her fuck all. I felt sorry for her. #sextape."
Tiffany and Ray. Credit: Channel 4
A fourth said: "Trample sex??? Put him in the bin!!! #SexTape."
While someone else simply asked: "Why marry someone who has a fetish that you don't enjoy."
In another episode the programme featured a couple from Glasgow, who were afraid their sex life had gone a bit stale after a three year on/off relationship.
Victoria Obahor and Brian Matthews - who had admitted to cheating on his missus several times - both said their appearance on the show has had a positive impact on their relationship in the long run.
Despite the fact that they described the sex they had in front of the cameras as the worst they've ever had, Victoria says the advice they got afterwards - in which sex and relationship expert Anjula Mutanda told them to be more experimental and reconnect - has had a lasting effect on them.
Brian and Victoria. Credit: Channel 4
Victoria admitted to feeling like a 'bored housewife' before they went on the show, but afterwards told the Sun: "It has made me insatiable again! I have started to go back to the old ways in the bedroom. It has helped me.
"I am not a bored housewife anymore and the programme helped us find stuff out. I did want to stay with Brian and the counselling made a difference."
Brian explained: "I had been single most of my life and she became the first serious relationship.
"I didn't want that at first. I didn't want things to change, I still wanted to be Jack the lad. But it got boring. It got that married couple way - putting our pyjamas on, watching TV, going to bed. Victoria wasn't open to new things anymore."
He continued: "It has made our sex life better. Victoria took on board things I said and she dresses more sexily. Things have certainly improved and we do more dating together."
Featured Image Credit: Channel 4