Professionally, Lindsay Lohan has seen better days (what, you didn't catch her unmemorable minute of screen time on the "Ugly Betty" season finale?), but thanks to her question-filled personal life, she continues to generate headlines.

Seems that while partying on Diddy's yacht last week at the Cannes Film Festival, the attention-craving starlet, 21, wasn't exactly shy about showing her affection for deejay Samantha Ronson, 30, her constant companion in recent months.

The pair was snapped hugging, holding hands and sharing a tight-lipped kiss at the exclusive soiree Thursday night. The following evening, Lindsay turned up at a Dolce & Gabbana shindig sporting a butt-skimming minidress and a diamond band on her ring finger, a speculation-inviting bauble that quickly sparked engagement talk.

Ronson, however, dismissed the ring rumors when surrounded by paparazzi Tuesday in New York, scoffing to TMZ.com, "Not true." As for their touchy-feeliness in Cannes, Lohan's rep tells the New York Daily News, "They are close friends."

But has the actress, who was photographed Tuesday night in Manhattan with her mom Dina and younger sibs Ali and Cody, decided to offer her take on relationship rumblings?

Lindsay and Samantha share a moment on Diddy's yacht.

"This is all I'm saying about the situation," she purportedly posted on her MySpace page Tuesday (via JJ's Dirt). "I can date who I want to date. I can do what I want to do ... Sam is great. She's more than great."

Less great is LiLo's dad, Michael, who seems incapable of keeping his fried bologna hole closed when it comes to his oft-estranged (and understandably so) daughter.

Papa Lohan spent much of Tuesday talking to any outlet that would listen about how he hasn't discussed his issues-plagued offspring's closeness with Ronson.

It all started with Us Weekly, which quoted him as saying Lindsay's alleged relationship with Samantha "is evident to anyone with half a brain."

But Michael quickly backtracked, insisting to OK!, "I never said anything like this. I've never even looked at the pictures of Linds and Sam, so how can I comment on this?"

The born-again jailbird also gave Billy Bush a call, explaining that his statement was aimed at ex-wife Dina's execrable new reality show, "Living Lohan."

"It was applied towards Lindsay," he rants. "It was twisted and misrepresented ... that's Lindsay's business. Lindsay can make her own life choices, that's between her and God."

He then pointed out to the New York Daily News that his sobriety-challenged progeny's decisions are her own: "I don't get involved in my daughter's personal life. They're friends, they're always together. I hug my friends, does that make me a homosexual? Of course not."

Lohan's time with Ronson is well-documented, with the BFFs hitting rock bottom over Memorial Day weekend in 2007, when the actress crashed her Mercedes, received a DUI and was photographed seemingly passed out in the passenger seat of Samantha's car. She soon headed off to rehab.

More drama was kicked up in April 2008, when LiLo supposedly confronted Ashley Olsen at a New York nightclub when she spied her chatting with Ronson.

"Get your 15-year-old 'Full House' a-- away from my girlfriend," she is said to have hollered at the more substantial Olsen twin (per People).

When not raising eyebrows, Lindsay has squeezed in some actual work, including recording the song "Bossy" for her forthcoming CD.

"I gotta admit, we were like ... Lindsay Lohan?" co-producer Ne-Yo tells Billboard of his reaction to working with the not quite vocal powerhouse. "I mean, I've written for Beyoncé, Mary J. Blige, Rihanna, Celine Dion and ... Lindsay Lohan? But I will say this; we gave her a quality record and she did a ridiculously fabulous job. I was so shocked I had to call her and apologize for what I was thinking because she did so good. I think the world is gonna be surprised."

Next: PDA Report: Kate & Lance, Justin & Jessica