lindsayseriousseen.jpgSenn pic courtesy MTV

Things are getting so serious between Lindsay Lohan and her Gucci model, former City star Adam Senn, that over the holidays she took him to meet the family!

The NY Daily News reports that last week Lindz showed up to her sister Ali's birthday party with Senn, where he met her mother.

"Dina really likes him," says one source. "She thinks he is 'good for her.'"

And apparently he's not only good for her, but has become a rock for her while her parents continue to battle it out in court over child support.

"Everything that's gone on between Lindsay and her dad has really taken a toll on her," the spy adds. "Adam is the one really positive thing going on in her life."

And despite the fact she denied dating him on Twitter, saying "I'm not dating my friend lol, people are nutso, and its not a way to start of the new year with rumors :)" Lilo and her model man were apparently texting and calling each other all weekend.

"Adam is a good guy," the source says. "and Lindsay is definitely starting to turn to him when things get bad."

Let's hope he turns out to be "good for her!" Lindz needs a little positive influence in her life these days!