"Lindsay's had to deal with this for so long," Alba, 28, tells the U.K. edition of Cosmopolitan for its March issue. "Everyone has to live their life, and that's what people forget when you're in this business – she's really nice. We hang out and chat for hours about girl stuff."
Dismissing tabloid reports that Warren was caught kissing Lohan in November, Alba, 28, adds that she and Warren, 31, might even make a TV show about "the ridiculousness of tabloids."
"When people wrote lies about me before I had [my daughter] Honor, I'd get upset or I'd get nauseous or I'd get angry or I'd want revenge," Alba says. "Now, it's like, it's just so ridiculous and it's not even close to being the truth."
Views on MarriageThe Valentine's Day actress and film producer Warren wed quietly in May 2008. She gave birth to daughter Honor a month later.
In the wide-ranging new interview, Alba admits she had "a hard time agreeing with marriage at all because I feel like it's been warped," saying it used to be "about survival – not love or soulmates."
But she came around to the idea. "I'm choosing you as my family, and we're going to love each other through thick and thin," she says.
She also says motherhood has mellowed her. "I used to harp on about my insufficiencies, but after Honor I forgave myself for not being perfect," she says. "I stopped trying to be a crowd pleaser and accepted my flaws, and then, in turn, you accept everyone else's."