I just got a good luck on your upcoming wedding card and letter from my ex-boyfriend's mother. He and I are still friendly and have been over the years (he's a good guy). We broke up about 10 years ago and I've kept in touch with his mom/family via Christmas cards and such.
She remembered my Christmas card mentioned a spring wedding so she sent a lovely note wishing luck on the wedding. It was just the pick-me up I needed to attack a day of wedding tasks.
Oh and I got 2 more RSVPs so now I'm just down to waiting for 5!!!