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BOULDER, Colo. — A man has been arrested after he allegedly raped a teenage boy during a wedding in Boulder in April, according to police.

Calan Reichstein, 29 of Boulder, was arrested Thursday. He faces four charges, including sexual assault on a child with force, sexual assault on a child, unlawful sexual contact with force and contributing to the delinquency of a child.

According to the arrest affidavit, the victim told the Boulder Police Department that he met Reichstein at the wedding at the St. Julien in Boulder where Reichstein offered to buy him alcohol.

The boy was 14 years old at the time.

After the wedding, the victim told police that Reichstein invited him to his hotel room where Reichstein allegedly sexually assaulted him.

The family returned to their home in Arizona and the boy did not tell his family about the incident until August when he started having nightmares and flashbacks, according to the affidavit.

The boy told his girlfriend and later his family about the assault, and they reported it to police.

Reichstein has denied the allegations.