The wife of “Love and Hip Hop” star Yung Joc must have finally reached her tolerance level of watching her hubby and his sidepiece on TV … so she’s pulling the plug on their marriage. Alexandria Robinson filed to divorce the 31-year-old rapper. They were high school sweethearts and have been married for 13 years. They have 3 kids.

Alexandria acknowledges in her docs … she and Joc have been separated since Feb. 2012. She wants the works — spousal and child support. She says she only pulls in $1,875 a month. But she’s banking on getting royalties from his music publishing rights.

Not surprisingly, Alexandria cites adultery as grounds for the divorce. Joc’s been carrying on a high profile relationship with Karlie Redd on “Love & Hip Hop: Atlanta.” They live together on the show. And get this … the GF gets really pissed off when she suspected he cheated on her.