Is Lindsay Lohan a stepmum? AAP Images Mon-25-Aug-14 11:24 Share this By Jay-Jay HarveyIs Lindsay Lohan a stepmother? She is said to have shacked up with an older investment banker called Patrick Mahony. She has moved into his house with his two young daughters. A source says, “Lindsay helps the kids take baths. She really pitches in looking after them, and the girls really like her. She’s finally in a mature relationship with a really grounded guy.” You May Also Like Become a fan of The Edge on Facebook and on Twitter .