Lynn's opinion is incredibly important to Justin.
And he's looking long-term with Alyssa now that his mom has given them the thumbs-up.
The Kiss The Bride star was spotted smooching with Durst on a secret date at Los Angeles' Whiskey Bar on Friday night.
A fellow reveler says, "They were all over each other.
A pal explains, "Alyssa feels Justin's no longer a boy, but not yet a man, to paraphrase one of Britney's songs.