TMZ reported Tuesday the actress's representatives "had been in touch with several high-end divorce lawyers," while James's reps had "contacted several lawyers" in case Bullock filed for divorce following his reported infidelity.
Bullock's rep tells PEOPLE: "Neither she nor her representatives have contacted or shopped around for divorce lawyers."
James's rep says the report was untrue.
Bullock's rep also denied an Internet report that on Sunday night Bullock – who has moved out of the family home and has been lying low in the wake of the infidelity news – dined with producers to discuss an upcoming project in which she would play Meryl Streep's daughter.
"The entire report," says the rep, "is another piece of fiction."