Love was in the air as Nicole Richie and Joel Madden arrived at the afternoon nuptials of Good Charlotte guitarist Billy Martin and his high school sweetheart Linzi Williamson, on March 1. But it was an emotional day for more than the bride and groom — the ceremony also hit home for new parents Nicole, 26, and Joel, 29. “Nicole and Joel kept telling people that the wedding was beautiful and that they were having a great time,” said an insider. “Who knows. Maybe they’ll be next!”

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