It's a tale as old as time: Boy meets girl, boy and girl realise that they are “twin flames,” boy and girl commit to drinking blood from each other's body.
Megan Fox's Instagram announcement that she is to marry rapper turned pop-punk singer Machine Gun Kelly had all the usual markers of an engagement post: a kneeling figure, an open ring box, a caption about “having walked through hell together.”
“I said yes,” she wrote. And then she added one more thing: “…and then we drank each other's blood.”
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Sure! Fine! Okay! You can see how the Fox-Kelly blood-drinking thought process went, sort of.
Aren't we all told that we should bleed for love? Storybook heroes are always announcing things like “My heart beats for you” or referring to “the blood that runs through these veins.” “Blood” is used as a shorthand for “family member.” And Fox and Kelly came of age in an era when the most popular romantic narrative was about a vampire and the woman whose blood he wanted to devour.
This video!
But is drinking blood safe? Could this become a mainstream engagement ritual, like scavenger hunts or having a photographer hide in the bushes? I reached out to doctors to ask: Is it okay to drink human blood? Can you do it to sanctify your undying connection to another person's immortal soul? Can you do it but just, like, a bit?
“It is absolutely not safe to drink other people’s blood,”says Shikha Jain, M.D., a hematologist and oncologist at the University of Illinois Cancer Center in Chicago.
“As a board-certified internal medicine physician, I would highly recommend against anyone consuming human blood,” says Brooke Williams, D.O., an osteopath and cofounder of the nonprofit Color of Medicine.
Tessa Commers, M.D., a Seattle-based pediatrician who answers teen health questions for her 1.5 million followers on TikTok, adds, “As far as drinking someone’s blood, it’s overall not advised.”
Bloody hell.

If you ever want to feel intense shame, try calling doctors during the pandemic and demanding that they weigh in on Megan Fox and Machine Gun Kelly’s drinking blood. (Nevertheless, they were all extremely kind and helpful.)