According to Jim: Season 1, Episode 4

1 - 4: Anniversary

On Jim and Cheryl's 10th Anniversary, Jim pays Dana to buy him an anniversary gift to give to Cheryl. Dana buys a beautiful and touching charm bracelet and Cheryl finds out that Dana bought the bracelet when Jim can't tell her the meaning of the charms that are on the bracelet. She also finds out that all her anniversary gifts over the past ten years were bought by Dana.