Inihayag ni Megan Fox noong huwebes sa kanyang Instagram account ang kanyang engagement sa kasintahang si Machine Gun Kelly o Colson Kelly sa totoong buhay.
Dito ay ipinost niya ang video na may caption na: “In July of 2020 we sat under this banyan tree. We asked for magic. We were oblivious to the pain we would face together in such a short, frenetic period of time. Unaware of the work and sacrifices the relationship would require from us but intoxicated off of the love. And the karma.”
Dagdag pa ni Megan, “Somehow a year and a half later, having walked through hell together, and having laughed more than I ever imagined possible, he asked me to marry him. And just as in every lifetime before this one, and as in every lifetime that will follow it, I said yes…and then we drank each other’s blood.”

Si Machine Gun Kelly naman ay nagbahagi rin ng video ng engagement ring ni Megan, na may caption na: “yes, in this life and every life”, beneath the same branches we fell in love under, i brought her back to ask her to marry me. i know tradition is one ring, but i designed it with Stephen Webster to be two: the emerald (her birth stone) and the diamond (my birth stone) set on two magnetic bands of thorns that draw together as two halves of the same soul forming the obscure heart that is our love. 1-11-2022.”

Nagkita ang dalawa sa set ng crime drama na pinamagatang “Midnight in the Switchgrass” noong Marso 2020.
Nagpakasal si Megan Fox sa aktor na si Brian Austin Green noong 2010 at naghiwalay noong Marso 2020. Si Megan at Brian ay may tatlong anak na sina Noah, Bodhi at Journey.
Si Machine Gun Kelly naman ay may 12-taong-gulang na anak na babae na si Casie.