‘White kiss’ is apparently a major green flag in men and women following intimacy

Affection, chemistry, a quick goodbye before work - it's clear that a kiss can mean a lot of things.

However, according to a whole bunch of people online, there's one type of kiss that says even more about how you feel about your partner.

Dubbed a 'white kiss', the divisive bedroom trend has left many couples calling it one of the biggest green flags in a relationship.

For anyone keen to expand their NSFW lingo, a 'white kiss' happens when you kiss your partner immediately after oral sex, without any clean-up in between.

For some, it's a complete no-go, but for others, it's the ultimate sign of intimacy.

Sexologist Becky Crepsley-Fox explained to the Metro: "Sharing fluids, mixing tastes - it can feel like total acceptance of another person.

"There’s something about allowing that level of closeness that feels really good and like complete connection."

Sexperts have explained why a 'white kiss' is actually a major green flag in a relationship (Getty Stock Images)

It's clear people agree with one Redditor confessing: "That’s actually my favourite part of receiving oral sex. It’s so hot to taste myself on my partner’s mouth."

"He even pulls my head up to kiss me, so I don’t think he minds the sloppiness or taste," a second chimed in.

A third shared: "She’ll kiss me after I eat her out, so I will kiss her after she gives me a BJ."

"Would you want to give someone head, if they immediately treated you like you were disgusting after you did?" pointed out a fourth.

Another added that 'being squeamish about bodily fluids is a huge turn off' while a final Reddit user joked that 'a chef’s got to taste his own cooking'.

Some people, however, find it 'gross'.

But why does it make some people so uncomfortable?

People seem super divided on the 'white kiss' trend (Getty Stock Images)

Well, according to sex and relationship expert Annabelle Knight, a lot of it comes down to lingering taboos around bodily fluids.

"There’s definitely an element of shame there," she told the outlet. "You don’t have to look far to see how periods are still vilified in part for this reason.

"I find men in particular carry some (conscious or subconscious) misgivings around interacting with their own bodily fluids, which might somewhat explain why many of them don’t like to kiss after receiving oral."

She adds that for some men, there can be deeper feelings at play, too.

"To some it might even seem akin to giving yourself (or someone of the same sex) oral," the expert continued. "It’s possible there is some internalised shame around sex and sexuality having an effect on this."

Meanwhile, Becky says some people are simply put off by the idea alone.

Whatever your stance, a 'white kiss' should only happen if everyone involved is comfortable with it (Getty Stock Images)

"Some people are uncomfortable with tasting their own fluids, or worry about hygiene," she noted. "Bodies are intimate, and not everyone has the same relationship with that level of closeness."

That said, Annabelle has a straightforward take on the debate.

"If you’re willing to let your partner put their mouth on your genitals, then you should have no problem kissing afterwards," she declared.

Whether the idea of a 'white kiss' sounds incredibly hot or completely unappealing, both experts agree on one thing: it should only happen if everyone involved is comfortable with it.

"Consent should be a core part of any sexual activity, so it’s definitely something you should discuss before sex,” Annabelle says.

"Aside from the question of consent, it can be an exciting way to learn about your partner’s preferences, and share your own with them (if you love it, you can let them know)."