However, although the couple has yet to be engaged, the 32-year-old is pregnant with the 25-year-old Biermann's child and hopes to marry him eventually, according to People sources close to Zolciak.
The couple has been dating since May, but Zolciak only confirmed she is expecting last week after previously dodging pregnancy reports.
"I was surprised! While it wasn't planned, God clearly has a bigger and better plan for us and we're excited," Zolciak told Life & Style last week in an interview in which she announced her pregnancy.
The new baby will be Zolciak's third child -- adding to her 13-year-old and nine-year-old daughters from a previous marriage.
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