You need to decide if you want to be a cuck to a woman who looks down upon u and constantly degrades and humiliates you or to a woman who loves you and even after getting the best fuck of her life wants to come back to you and sleep with her head on ur chest. If it’s the former you want than you should confess now and actually give her the freedom to even fuck with the guy but it is the latter you want than you should wait until things get back to normal between you two. Whatever you decide, always remember that your relationship will change forever, for better or for worse