Beneath the looming mausoleums of the Hollywood Forever Cemetery, David Arquette laid to rest any doubts about his nearly 8-year marriage to Courteney Cox.

“At every turn, it’s my job to be loving and honest to her,” Arquette told PEOPLE at Wednesday night’s premiere of his new movie, The Tripper. “If there’s one thing about our relationship, there are no surprises.”

Arquette, 35, who cowrote and directed the horror film, walked the red carpet hand in hand with Cox, 42, often whispering affectionately in her ear between interviews.

“Deep down inside they’re very similar,” Arquette’s sister, Medium star Patricia Arquette, said of the couple when asked what makes them work. “They’re both nice, kind people. They’re honest and genuine and balance each other.”

Added her husband, Thomas Jane: “They make things a family affair. That’s what we love.”

Cox currently plays tabloid editor Lucy Spiller on FX’s Dirt, which she and Arquette executive produced. They have one daughter, Coco, who turns 3 in June.

Arquette dismissed rumors of marital strife in an interview with an L.A. radio station Wednesday morning. “They’ll say what they’re gonna say and you just say ‘No, that’s not true,’ ” he said. “It’s all sort of fun anyway.”

• Courteney Cox, talking and laughing over dinner with former Friends costars Jennifer Aniston and Lisa Kudrow and several other female pals at West Hollywood restaurant Il Sole. “They were having a wonderful time … really enjoying each other - like sisters,” says an onlooker. The ladies feasted on homemade spinach-and-ricotta ravioli, oven-roasted Dover sole and chocolate cake with a silver-colored sauce. Aniston was the first to leave, at 9:45 p.m., followed by Cox and Kudrow, who lingered over their meal until 10:20 p.m.

• Jake Gyllenhaal, sampling kumquats at the Farmers Market in L.A. “They were a little sour for him,” a vendor tells us, adding, “He winced while he was eating, but I think he liked my goods because he must have sampled a half dozen.”

• Jessica Alba, dancing with friends to songs including Kanye West’s “Gold Digger” at West Hollywood lounge Winston’s. Though she seemed reserved in the beginning of the evening, the actress got more animated as the night progressed and stayed at the venue until 1:50 a.m., when the lights came on.

• Matthew McConaughey, “attacking the bongo drums” while sitting in with country singer Tony Joe White and his band during a show at the Revesby Workers Club in the suburbs of Sydney, Australia. Club marketing manager Linda Joannides said the actor - who’s been filming the comedy Fool’s Gold Down Under - was “very nice and relaxed” and “put all the female staff into a twirl.” Earlier, the workout king was spotted jogging around the Sydney harbor, past the Opera House and through the Botanical Gardens in shorts and a blue bandanna.

• Jessica Biel, buying sweet treats at SusieCakes bakery in Brentwood, Calif. The actress picked up a red-velvet cupcake, a small cheesecake and “2″ and “8″ candles - all for a girlfriend’s birthday.

• By BRYAN ALEXANDER and OLIVIA BISHOP

Tuesday’s Caught in the Act! >

• Courteney Cox and husband David Arquette, dining with singer Ben Harper and his wife Laura Dern at Il Sole in West Hollywood. “They were deep in conversation,” an observer says, as the couple ate prosciutto with marinated eggplant, roasted peppers, goat cheese and olives. Adds the onlooker: “Both couples looked very much in love, or at least their respective kissing said so.”

• Leonardo DiCaprio and his model girlfriend Bar Refaeli, sharing a romantic dinner at Spago in Beverly Hills. The pair ate crispy Monterey Bay calamari plus sweet pea and mascarpone agnolotti. “They were whispering all night,” an onlooker tells us. “They looked really cute together.”

• New couple Cheryl Burke (of Dancing with the Stars) and Matthew Lawrence, snuggling together in a VIP booth at West Hollywood club Area. As the evening wore on, an onlooker tells us, “The pair hopped onto the dance floor and busted some serious dance moves.” Which song got the two moving? It was ABBA’s “Dancing Queen.” “They looked really happy in each other’s arms,” the clubgoer says.

• At eatery Mr. Chow, John Travolta and wife Kelly Preston, holding hands and sharing a dinner of sautéed sea bass and squab with lettuce.

• Mark Ruffalo and wife Sunrise Coigney (who owns celebrity boutique favorite Kaviar and Kind), sticking close together at a crowded Chateau Marmont. After Ruffalo finished chatting on his cell phone, the two sat together and then shared a meal indoors. Says an onlooker: “They looked really cute and in love.”

• By KIMBERLY LANSING