Benjamin, 36, told the magazine last month his relationship with Christmas ended in December 2017.
"Unfortunately, I had very little contact with Christmas in the last few months of her pregnancy. However, prior to that, we spent almost every day with each other for six to seven months straight," Benjamin revealed.
"I went to every doctor's appointment, accompanied her for travel, moved furniture and did all the things that two caring adults do with and for each other... I was finally able to reach her a few days before [her] due date. I found out she was being induced through Instagram, and shortly thereafter received an email."