Sex coaching site Betty Martin features free videos and printable worksheets for couples

Named after Prince, who in his hit Alphabet Street sings, “Tonight I’m just not in the mood, so if you don’t mind, I would like to watch,” the ‘purple pass’ involves giving your partner permission to masturbate while you witness them approvingly. You might encourage them by enthusing about how hot they look, so they get off and you take part without doing anything physical that you don’t feel up to.

Don’t let labels restrict you

“There’s so much power in proudly naming your fetishes and fascinations, but labels like ‘dominant’ can become restrictive cages if they’re interpreted too rigidly – and not the saucy kind of cage,” says Gunsaullus. Before writing someone off because they don’t share your particular kink, examine what you get from it emotionally. You might enjoy being submissive in S&M scenarios because you find relief in relinquishing responsibility, maybe you like to please by fulfilling orders or perhaps a powerful lover fixating upon you makes you feel craved.

There are softer ways to serve these longings if your partner doesn’t always want to take the reins or is still learning the ropes. Think of your kinks as you liking a type of energy rather than having a set identity. But what if you reach an impasse because you and your partner’s kinks are too much in sync and you both want to play the same role? “My girlfriend and I are both submissive,” says Janine*, 24. “When it’s my turn to play domme, I command her to spank me or use a dildo on me while I lay pliant, so I’m in charge but still get a similar physical experience to being the underling.”

Make use of resources

“I wish people viewed therapists for sex like they do dentists for their teeth, and visited them as a preventative measure to set their private lives on a healthy course rather than waiting until everything is rotten and they are falling out,” says Moyle.

However, if you’re not at the stage of seeking private counselling but want professional assistance in navigating incompatibilities, resources are out there. Mindfulness app Headspace offers guided meditations centred on relationships. Where Should We Begin?, a podcast that listeners have dubbed ‘the Rosetta Stone of feelings’, lets you listen in on real-life couples’ sessions with psychotherapist Esther Perel.

Educational site The School Of Life’s Pillow Talk cards help pilot constructive conversations about topics like sexual shame and power dynamics, while the London-based Havelock Clinic provides 45-minute online workshops on sexual desire and you can talk to their medical experts via instant message throughout the session.

Make peace with the situation

Certain couples do find that they never erotically align, so some decide to draw a line under their relationship. “I grafted at sex for eight years with a man I loved but whose natural drive was far lower and plainer than mine,” says Kathryn, 32. “We both tried so hard, but I hit a stage where whatever I was learning by trying to meet him in the middle was outweighed by what I lost by leaving my satisfaction on the sidelines.”

Yet even if sexual incompatibility remains, ‘sadly stay’ or ‘go, gutted’ are not the only options. “I challenge that binary,” says Barker. “You might consider opening things up. Consensual non-monogamy works for many people by allowing them to maintain wonderful, close relationships while having their sexual needs met elsewhere.

But there are also many folks who simply decide sex isn’t important to them after all, especially over time. I undertook a study into ‘enduring love’ with Jacqui Gabb, professor of sociology and intimacy at The Open University, which found that many, if not most, long-term couples had sincerely happy relationships paltalk that didn’t feature much sex together.”