Former "Here Comes Honey Boo Boo" stars June "Mama June" Shannon and Mike "Sugar Bear" Thompson must decide the fate of their marriage after Thompson's infidelity on the Friday episode of WE TV's hit reality TV series "Marriage Boot Camp: Reality Stars." In an exclusive sneak peek obtained by People, Thompson attempts to prove to Shannon that he's changed his cheating ways.

Shannon and Thompson, along with their castmates, face the final ring ceremony in which they must decide whether to re-commit themselves to their relationships or part ways. Thompson is called first into the ceremony.

"Man you can cut the tension with a knife because my life could change in a minute," Thompson, 43, says in his on-camera interview.

Shannon must ultimately decide on whether she can forgive Thompson for his infidelity, since he admitted to cheating on her with both men and women in a previous episode.

"I'm thinking to myself, God, is Sugar Bear able to use the tools and actually be faithful to me? Because you can relapse," Shannon, 36, says in her on-camera interview. "Honestly, within my heart, I'm scared to get hurt again."

The parents of 10-year-old Alana "Honey Boo Boo" Thompson meet in front of counselors Jim and Elizabeth Carroll outside in the ceremony area. Sugar Bear is the first to speak, and he makes his case as to why he wants to stay married and why he deserves a second chance.

"I know I've hurt you and the girls, and I want to start over fresh," he tells his wife. "You know I love you, but you could love me a little bit back. Not much, just a little bit."

"I think that you've made huge progress here," Mama June replies. "But you've made bad choices. I believe you wanna change, but I don't know if you can change."

Watch the full sneak peek below and be sure to catch tonight's season finale of "Marriage Boot Camp: Reality Stars" on WE TV.