Jennifer Garner is not interested in rekindling her relationship with ex-husband Ben Affleck.

Despite Affleck being “open” to the idea, a source exclusively tells Page Six that the “feeling is not mutual.”

The insider further tells us that the “13 Going On 30” actress — who has been dating John Miller since 2018 — is “happy” with her boyfriend and “that’s just not where her head is at.”

Jennifer Garner is not interested in rekindling a relationship with ex-husband Ben Affleck, a source exclusively tells Page Six. GC Images

According to the insider, “the feeling is not mutual” for Garner despite the fact that Affleck would “be open” to the idea “if the timing was ever right.” GC Images

Garner — who has been dating John Miller on and off since 2018 — is “happy” with her boyfriend and “that’s just not where her head is at.” ZapatA/MEGA

“Jen has a great co-parenting relationship with Ben, and that’s where things stand on her end at the moment,” they added.

Meanwhile, a second source told us that Affleck “would love another chance” with the mother of his children and “would be open to giving things another shot.”

“At the same time, Ben knows it’s just not realistic at this time in their lives.”

According to the insider, “Jen has a great co-parenting relationship with Ben, and that’s where things stand on her end at the moment.” adar

The “Daredevil” co-stars share kids Violet, Seraphina and Samuel. Bauer-Griffin / SplashNews.com

A second source told us Affleck “would love another chance” with his ex-wife and “would be open to giving things another shot.” WireImage

“Ben just got out of a marriage and finalized his divorce [from Jennifer Lopez], he is really busy with work and is focused on this new chapter,” the insider noted.

“Plus, Ben respects Jen’s relationship with John and would never come between them.”

Reps for Affleck and Garner did not immediately respond to Page Six’s requests for comment.

“At the same time, Ben knows it’s just not realistic at this time in their lives,” the source said. GC Images

“Ben just got out of a marriage and finalized his divorce [from Jennifer Lopez], he is really busy with work and is focused on this new chapter,” the insider explained. Getty Images

The exes were spotted giggling as they celebrated their son Samuel’s 13th birthday on Sunday. BACKGRID

The exes — who were married from 2005 to 2015 — were spotted giggling on Sunday as they celebrated their son Samuel’s 13th birthday.

The “Gone Girl” star, 52, was seen affectionately grabbing the actress, also 52, around the waist as she focused her paintball gun on a target at the Combat Paintball Park in Castaic, Calif.

Affleck pulled Garner in toward him, and she appeared to welcome the embrace.

The “Gone Girl” star was seen affectionately grabbing the actress around the waist as she focused her paintball gun on a target at the Combat Paintball Park in Castaic, Calif. GJC / BACKGRID

Affleck pulled Garner in toward him, and she appeared to welcome the embrace. GJC / BACKGRID

The former couple appeared comfortable with one another while participating in the festivities. GJC / BACKGRID

The “Daredevil” co-stars — who also share Violet, 19, and Seraphina, 16 — looked cozy as they laughed and closely chatted while participating in the festivities.

We previously reported that Affleck and Garner “are closer than they’ve ever been since their divorce.”

An insider told us in late January that the two “have found themselves leaning on each other more than ever,” “particularly since Ben’s divorce from Lopez and with the LA fires and everything going on.”