Is it a sin to attend a same-sex marriage?

Is it a sin to attend a same-sex marriage? My cousin is getting married soon and my sisters (who attend Mass every Sunday) are planning to attend the event.

kevokk,

The following link should assist you in better understanding the Catholic Church’s teaching on attending same sex marriages. If you have any further questions or concerns that are not answered by these links, please contact Catholic Answers directly.

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