MACHINE Guy Kelly has finally revealed why girlfriend Megan Fox gifted him a vial of her blood.
The 31-year-old's unique necklace was first shown off on Valentine’s Day when he shared a photo of it to Instagram.
He captioned the post: "I wear your blood around my neck".
Addressing the personalized jewelry on yesterday's The Ellen Show, Kelly told host that gave him a drop of her "DNA" before she travelled abroad to film her new horror flick Till Death in Bulgaria.
The TV star, 63, asked: "Was that your idea, or did she fall down and hurt herself, and you had a little thing?"
The hitmaker, real name Colson Baker, explained: "Well, she was actually going out of town to film a movie. This was really new in our relationship.
"I didn’t have a passport [at the time] either. So she was going out to Bulgaria, so I was kind of freaking out, like, 'You’re gonna leave and I can’t even come see you.'
"Some people give, like, a handkerchief to their partner or whatever. She gave me her DNA."
His comments come after the Bad Things hitmaker celebrated his 31st birthday alongside Megan and pals , 45, and , 42.
The star shared snaps from the gathering on his Instagram.
In one shot, Megan and Kourtney smiled at the camera as they cuddled next to their musician boyfriends, who made their rocker poses in the group shot.
Machine Gun Kelly also took a snapshot of himself with his black birthday cake and pink balloons behind him.
MGK wrote: "I’ll grow up next summer...SINcerely, birthday boy."
The Transformers actress and the musician first set tongues-wagging about their romance after her split with husband , 47.
Brian and Megan tied the knot in 2004 before in May 2020.
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The former couple share three kids: Noah Shannon Green, seven, Bodhi Ransom Green, six, and Journey River Green, four.
After announcing her split, Megan moved on with Colson, who she met while filming for Midnight in the Switchgrass.
Machine Gun Kelly has been spending time with a close source to the couple saying: "Colson is getting to know her kids."