Jennifer Garner and beau John Miller have reportedly been planning a secret wedding, but insiders claim the couple is getting cold feet.

Jennifer Garner is reportedly holding off marrying her boyfriend John Miller because of wedding jitters.A source spilled to the National Enquirer, They've been engaged for the longest time and

Garner, 52, and Miller, 46, have been together for six years already. Although the two prefer to keep their romance low-key, there has been a huge development in their relationship that they have been allegedly keeping among themselves for two years now -- their engagement.

They were beaming. Dressed casually in sweatpants and sneakers, Jennifer Garner’s dimples blossomed as she gazed at John Miller, who was equally dressed down in joggers and a New York Yankees tee. They looked like any other couple enjoying a few sweet moments of connection on a lazy Saturday morning as they walked down

Jennifer Garner secretly got engaged to her boyfriend, John Miller, and the couple is all set to walk down the aisle soon, claimed an insider.As reported by Life & Style, the 13 Going on

Jennifer Garner and John Miller allegedly contemplate canceling summer weddings amid concerns marriage may change their relationship dynamic.