LezLo and her gal pal are on the cover of the new issue of Star magazine.
The mag claims that Samantha Ronson plays the 'husband' role in her relationship with Lohan.
An insider tells the mag, "They're totally playing house and loving every minute of it. And, yes, they share a bed!"
The lovebirds reportedly call Samantha's Hollywood Hills house "home" — and behind closed doors, "Lindsay and Sam play certain roles," the source explains. "…Lindsay is the passive one, the wife. It works for them!"
And, according to the mag, the two also shop together for sex toys and have a 'bizarre' pact to stay thin.