No, he hasn't reunited with his ex-wife of 14 years. Instead, he's found a new ladylove and they are engaged.
The future Mrs. Zack Morris is a tall, blond advertising executive named Catriona McGinn.
His rep confirms to E! News that Gosselaar, 36, proposed to McGinn last week, sealing the deal with a 5-carat diamond ring from Neil Lane.
"Mark wanted to give Catriona her dream ring," Lane told E! News. "He was great to work with and she was thrilled with her ring."
News of the betrothal was first reported by People.
The two have been making the rounds together for several months now.
The former Saved by the Bell star was previously married to Lisa Ann Russell, with whom he has two children, 6-year-old Michael and 4-year-old Ava.
The actor, who currently stars on Franklin & Bash, filed for divorce in 2010, citing irreconcilable differences.
No word yet on a wedding date.