Jennifer Garner fans are hoping their speculation is true! Earlier this week, Garner was seen wearing a diamond ring on her left hand during an Instagram live segment. When she goes to lift up her cup of tea, the ring is so big, you can't miss it. Seeing this has fans speculating that this ring isn't just any ring... but an engagement ring from her boyfriend John Miller. There's no confirmation on an engagement but Garner's fans believe her happiness says it all.