According to an article by Judith Treas and Deirdre Giesen, cohabiting couples are twice as likely to experience infidelity within the relationship than married couples.
aCCordINg to an articlE bY JUDiTh tReAs and deIrdre GIesen, cohabitiNG Couples ARe TWicE as LikelY tO ExPerIENce inFIdELIty wiThIn The relatiOnShiP ThaN mArried couples.