WARNING: The following contains major spoilers for Season 3 of Sex Education, now streaming on Netflix.
One of the most shocking aspects of Sex Education Season 2 was Dr. Jean Milburn (Gillian Anderson) becoming pregnant. As a sex expert, she's usually very cautious, plus there's her age, which diminished her chances -- not to mention Jakob's vasectomy. However, as the new season finds them navigating a broken relationship, the reality they're not compatible, and major trauma from their past before meeting each other, a huge twist ensues massive drama is on the horizon for Otis' new family.
Jean begins the season by stalking Jakob, scared to tell him that after declaring she didn't want the commitment and breaking up with him, she's now pregnant. She works up the courage and after a few bumps this eventually brings them closer together, as Jakob doesn't mind being a parent again. He's quite genuine and has done a good job with Ola and her sister, plus he does care for Jean.
In addition, seeing as his wife died, Jakob has the maturity and compassion none of Jean's other flings, especially younger ones like Dan, display. Jakob agrees to co-parent with Jean as they're still not sure if they have a romantic future, but tensions flare after he moves in. It leads to an emotional outburst where he asks if the kid is really his, as Jean wasn't monogamous in the past, and she was sleeping with Dan right around when she met Jakob.
It feels childish and bitter on Jakob's part, but he does harbor insecurities from his past, where his wife cheated on him, only for him to forgive and care for her when she got terminally ill. This background explains Jakob's insecurities, and why Jean kissing her ex-husband Remi was too much for him.
Nonetheless, he apologizes and they persevere. The show, however, gets upended after Jean gives birth to baby Joy. Jakob is there for Jean as she has a complicated birth that leads to her requiring surgery. This tees up Jakob supporting Otis, too, as he promises the teenager that, no matter what happens to Jean, he will still be there for him. But that notion may well be shattered as the season ends.
As Jean recovers, she goes through her mail in the hospital, only to find an envelope bearing a DNA test. While we don't see the father's name, her mortified reaction has left fans wondering if it is indeed Dan with his mommy issues, or perhaps a drunken Jean did actually have sex with Remi at some point Season 2 didn't show.
The former would give her another infant to care for, while the latter would be an interesting dynamic as Remi's yet to grow up, plus Otis hates him for being a cheat and manipulator. Either way, it's going to crush Jakob if the baby isn't his, and infuriate Ola, as she repeatedly warned the free-spirited Jean not to break her dad's heart. Not just that, this debacle over his new baby sister will surely hurt Otis, who'd just finally seen eye to eye with his mom for the first time in a while.
See how Jean's pregnancy complicates Season 3 of Sex Education, now streaming on Netflix.