Jennifer Garner has once again found herself in turmoil over her relationship with her current boyfriend, John Miller, and her ex-husband, Ben Affleck.

Having been in a relationship with her businessman boyfriend since 2018, the 54-year-old actress has reportedly been encouraged to set firm boundaries with the 53-year-old actor.

Garner’s close co-parenting dynamic with Affleck has sparked questions about the nature of their relationship.

According to a new report, the Deep Water star’s casual behaviour with his ex-wife has been straining her relationship with Miller.

Insiders alleged that Garner’s partner has become uneasy about her bond with Affleck and is seeking answers regarding their relationship.

“John’s friends do not understand how he puts up with this. They’re telling him [that] he needs to give Jen an ultimatum — that it’s either him or Ben — but there’s no way John will do that,” a source said.

The tipster added, “The problem is that Ben always uses the kids as the pretence for being around, so there isn’t much John can say, even if he suspects that Ben has ulterior motives.”

This development comes after Garner was recently seen with Affleck, with the pair sporting coordinated outfits.

Jennifer Garner and Ben Affleck’s current relationship dynamic

Jennifer Garner and Ben Affleck, despite divorcing in 2015 after a decade-long marriage, have remained friends and actively co-parent their three children.