A Spring Valley man who attacked his former roommate with a knife last year in a love-triangle dispute faces up to seven years in New York State prison after being convicted by a jury, officials said Tuesday.

Segundo Loja-Llivicota, 26, of Lafayette Street, was convicted Monday of one count of felony second-degree assault, Rockland County District Attorney Thomas Zugibe said in a statement.

On Aug. 23, 2011, Loja-Llivicota attacked the victim in the basement of a North Madison Avenue apartment in Spring Valley, wounding the man's left arm, chest, face and head, officials said. The victim, whose name officials did not release, was brought to Nyack Hospital for treatment and has since made a full recovery.

Loja-Llivicota and his wife had shared the apartment with the victim at one time but had moved out, officials said. Loja-Llivicota became suspicious that the victim was having an affair with his wife because the former roommate's phone number began to show up repeatedly on his wife's cellphone, leading to the confrontation, officials said.

Loja-Llivicota was found guilty after a seven-day trial before County Court Judge William K. Nelson and was returned to the Rockland County jail to await sentencing on Feb. 26.

Loja-Llivicota's attorney, Sanders Denis of Queens, said he will appeal, saying the second-degree assault charge was added late in the case.

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"My client was found not guilty of first-degree assault," Denis said. "All along I was defending my client on the first-degree assault ... throughout the whole thing they never included the second-degree charge until a week before the trial."

The second-degree charge lowers the bar of proof from "serious physical injury" to "physical injury," according to the state penal code.

"When the judge allowed them to add the second-degree charge, I was furious," Denis said. "I feel I was placed at a disadvantage when all along I was fighting Assault One, and then at the end they include Assault Two."