A married<\/a> couple with three children are planning a divorce<\/a> to allow one to wed their shared girlfriend and form a three-way relationship to raise their children. <\/p>\n Cristina Kaiser, 31 and her husband Benno, 37, met 12 years ago and went on to have Isaiah, 11, Rebecca, seven, and Brianna, six.<\/p>\n After years of marriage, Cristina, who is bisexual, began to feel something was missing from her love life and the couple began an ‘open marriage<\/a> ‘ – free to date and see other people. <\/p>\n She eventually made Sierra Kuntz her girlfriend and eventually introduced her to her marital home.<\/p>\n Now, in a bid to bring a joint girlfriend into the family fold, either Cristina and Benno are planning to marry 21-year-old Sierra Kuntz.<\/p>\n The marriage would mean all three adults would have legal rights to the children.<\/p>\n Benno, a legal assistant, said: \u201cCristina and I decided this was something that needed to be done in order for Sierra to understand the depth of how much we love her and want her to be part of our family<\/a> . <\/p>\n \u201cThe benefits of one of us marrying her are going to be on many different levels.<\/p>\n \u201cShe is going to be legally considered a parent to the children and, more importantly, it will show her that this is not a temporary thing, we both love her and it\u2019s something that\u2019s meant to be permanent.\u201d<\/p>\n![\"\"](\"http:\/\/i3.mirror.co.uk\/incoming\/article10291057.ece\/ALTERNATES\/s615b\/Poly-Triad-Im-Divorcing-My-Husband-So-We-Can-Marry-Our-Girlfriend.jpg\")
<\/div>\n<\/div>
\n (Photo: Barcroft Media)<\/span>
\n<\/figcaption><\/figure>\n![\"\"](\"http:\/\/i3.mirror.co.uk\/incoming\/article10291048.ece\/ALTERNATES\/s615b\/Poly-Triad-Im-Divorcing-My-Husband-So-We-Can-Marry-Our-Girlfriend.jpg\")
<\/div>\n<\/div>
\n (Photo: Barcroft Media)<\/span>
\n<\/figcaption><\/figure>\n