Stress from Jason Biggs’s recent career resurgence and a newfound confidence following his impressive weight loss transformation are what drove a ‘wedge’ between him and soon-to-be ex-wife Jenny Mollen, sources have alleged.
The couple made the shocking announcement that they were going their separate ways earlier this week after 18 years of marriage.
Now, insiders have revealed what exactly led to the split exclusively with the Daily Mail, claiming that a recent ‘change’ in Biggs was to blame, in part.
One source alleged that the actor had a noticeable ‘ego boost’ following his massive weight lost last year.
The American Pie star, 48, told Page Six in April 2025 that he had shed 35 pounds after ‘some cholesterol issues’ led to him changing his diet and exercise routine.
‘Jason definitely has changed since his weight loss transformation. He lost a lot of weight and it definitely helped boost his ego,’ the insider said.
Stress from Jason Biggs’s recent career resurgence and a newfound confidence following his impressive weight loss transformation are what drove a ‘wedge’ between him and soon-to-be ex-wife Jenny Mollen, sources have alleged. The pair is seen in September
The American Pie star, 48, told Page Six in April 2025 that he had shed 35 pounds after ‘some cholesterol issues’ led to him changing his diet and exercise routine. He’s seen left in 2019 and right in April 2025
‘I don’t think he was wanting to lose that much weight but it happened and he’s proud of the results like any one who lost 40 pounds or more would be.’
In addition, the source said that added ‘stress’ from his recent work projects also ’caused a bit of a wedge’ between him and Mollen, 46.
‘He had his first big directorial debut [with the movie Untitled Home Invasion Romance] last year, and that was a really stressful time for him,’ they explained.
‘Trying to remain in the spotlight and continue to put out projects that are just as entertaining as what he was known for previously can be a difficult task.
‘But he has this reputation and he knows that and he puts pressure on himself to do things that are going to get just as much attention.
‘Jason has had more stress in his life than Jenny lately and I think that’s definitely caused a bit of a wedge.’
The insider explained that the couple was ‘truly a team’ during the early years of their marriage but that there have been growing ‘issues’ between them for ‘a while now.’
The pair was open in the past about getting couples’ therapy, which the source claimed ‘really helped them stay in their marriage as long as they have.’
The couple made the shocking announcement that they were going their separate ways earlier this week after 18 years of marriage
They wed in 2008 and share two sons together, Sid, now 12, and Lazio, now eight. They’re seen with their son in 2016
‘I think if they didn’t do therapy, they would’ve split maybe two or three years ago,’ they theorized.
The Daily Mail has reached out to Biggs and Mollen’s representative for comment.
The duo’s relationship began after they met while working on the 2008 film My Best Friend’s Girl together.
They became engaged in January 2008 and eloped four months later. A ceremony held in Napa with 40 guests in attendance followed later that year. They now share two sons together, Sid, 12, and Lazio, eight.
Their representative confirmed the split to People earlier this week, adding that they are on ‘great terms’ and prioritizing co-parenting their two sons.
The source said they believe that the split will be amicable and that the pair will be able to co-parent peacefully.
‘I can not see them having a nasty divorce – and I don’t see them even rushing to get a divorce,’ they said.
‘They’ve been together for so long – through all of each other’s ups and downs that their history together doesn’t get forgotten overnight.
‘Their kids are truly their priority during this time. Jason and Jenny are still going to be very much apart of each other’s lives.
The insider explained that the couple was ‘truly a team’ during the early years of their marriage but that there have been growing ‘issues’ between them for ‘awhile now’
In addition, the source said that added ‘stress’ from his recent work projects also ’caused a bit of a wedge’ between him and Mollen, 46. Biggs is seen last month
‘They’re going to be there for each other when celebrating big milestones and special occasions, even holidays.
‘Their split is just what’s best for them as a couple and as a family. Some people are better off as friends than as a married couple and I think they just started realizing that later on in their marriage.’
A second source reiterated to the Daily Mail that the breakup does not seem to be a messy one.
‘They are telling the truth that they are still friends. They both mutually decided that they would be better as co-parents and friends than anything else,’ they said.
‘They cherish their past, but they both know that moving on is the best for them and their kids. Once their divorce is settled, nobody believes that it will be nasty. They are going to do the best for all involved, this is actually going to be a pretty amicable breakup.’
A third source agreed, stating: ‘They really did just drift apart. There is no other party or anything like that. The relationship just ran its course.’
Mollen has previously been open about how she was plagued with insecurities in their relationship, which she detailed in a 2019 op-ed entitled I Used to Be Jealous of My Husband’s Ex, Then I Became a Mom.
In the piece, Mollen detailed an unhealthy fixation she once had with one of Biggs’ ex-girlfriends.
‘In my younger years (read: most of my 30s), I did drive-bys down her block, posted pics of myself in cute outfits I hoped she’d stumble across while googling me, and reeled her into interacting with me by finding things of hers around our house and gifting them back to her,’ the New York Times bestselling author wrote.
The pair spoke about getting couples therapy in 2016, with Mollen stating: ‘We have been getting along at the end of the day because we have a therapist.
‘You need to have a representative convey your thoughts for you sometimes. If it comes out of my mouth, sometimes it just sounds like I’m Jason’s mom.’
The actor added, ‘You shouldn’t be married and not have a therapist. You’ve got to do it as a preemptive strike.’
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