Lindsay Lohan might want to revamp her definition of safe sex to include an ironclad confidentiality agreement in addition to the standard latex-based accoutrements.

For the second time in two weeks, the sobriety-challenged and likely trust-issue-plagued starlet, 21, has had one of her professed inamoratos share ookily intimate details of his alleged close encounter with her to Britain's News of the World.

Lindsay and Riley Giles in Utah on Oct. 9

On the heels of Riley Giles blabbing about their rehab romance (sample revelation: "Lindsay is so hot. She has a great body. Her backside is fantastic, perfect, all plump and round") come the ostensible reminiscences of Alessandro diNunzio, a waiter-cum-"rock drummer" who was one of three Italian bachelors who reportedly wooed the actress during her unfortunately champagne-tinged trip to a film festival in Capri.

In an interview we suggest you take with a pillar of salt, the cakehole-uncorking diNunzio tells the tab he had no idea who Lohan was when she supposedly began making eyes at him as they journeyed by hydrofoil from Naples to Capri.

"She was wearing huge dark sunglasses -- and she spent the entire journey turning to look over at me. When I went outside for a cigarette, she followed," he recalls. "She just kept staring at me. It was unnerving and I went back inside."

He says that when they reconnected later that night and he realized who she was, "I almost collapsed."

An invitation to accompany her to a post-awards dinner was extended (she was honored at the festival as "an icon in the world of entertainment" -- that just doesn't get old), which diNunzio eagerly accepted.

They later hit some clubs, and "all of a sudden, she pressed up close, looked me in the eyes and asked if she could kiss me," he shares. "It was a strange role-reversal and it took me aback."

Luckily, he had the presence of mind to pucker up: "But I came to my senses and kissed her. We did nothing but kiss in the club after that. She didn't care who was watching."

They then made a beeline for her hotel room, according to diNunzio, who, if his music career doesn't pan out, appears to have a future as a writer of bodice-ripper romance novels.

He alleges that after an extended tête-à-tête on the bed, the leggings-loving actress, who was spotted in Los Angeles over the weekend engaged in such everyday activities as shopping for groceries and attending AA meetings, ditched her duds.

The loose-lipped fella then goes on to overshare such illustrative info as the color of her mismatched undies (black and emerald green, in case you're interested) and her "flawless" and "extremely flexible" body, which was dotted with "a few tattoos" and an "all-over golden tan."

Eeesh. We'll give you a minute to break out a wire brush and some bleach for a good scrubbing. Done? OK, moving on ...

The tabloid tattler admits he was once again stumped as to the part he was supposed to play in the sexy scenario, conceding, "I was shocked she had made the first move -- it took awhile for me to realize I was supposed to take my clothes [off], too."

And lest you think their purported connection was purely physical, diNunzio gushes, "The thing that struck me most about her was her intelligence -- I found her very lucid and bright."

He claims that after their night of, oh, let's say passion, he received several messages from Lindsay, including one reading, "Miss you," and met up with her again for some smooching.

One of those other guys: Lindsay makes out with Dario Faiella.

But diNunzio laments how devastated he was to discover he was but one of the ships that passed in LiLo's night, as photos of her spending snuggle-bunny time with actor Dario Faiella soon surfaced (the New York Post, meanwhile, says she's also been hanging out with Australian billion-heir Andy Valmorbida).

"I was hurt and sad when I found out about the other guys," he sighs. "I don't think I will see her again now that I have learned that she was seeing other guys at the same time as she was seeing me."

Adds diNunzio, who doesn't seem to grasp that whole, "I betrayed Lindsay by selling her out to the highest bidder" part of the equation, "... I'm going to watch all of her films -- even though really I'd prefer to see her again in real life."

Next: Romance Report: Brangelina's Family Dinner