NeNe Leakes‘ boyfriend is looking to close the book on his marriage … all while his estranged wife remains embroiled in a lawsuit with his current girlfriend.

The ‘RHOA’ star’s current SO, Nyonisela Sioh, just filed to divorce Malomine Tehmeh-Sioh — who recently sued NeNe over her relationship with her soon-to-be ex-husband. More Here