MARTIN COUNTY — A 26-year-old woman was arrested after her boyfriend said she struck him after saying she had a “threesome,” according to an affidavit.

Erica Loucks, of the 1500 block of Northeast Dove Avenue in Stuart, was jailed on a battery charge in connection with the New Year’s Day incidents.

A man who said he was Loucks’s boyfriend told Martin County sheriff’s deputies Loucks “was out all last night drinking and abusing narcotics,” the report states.

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“(The boyfriend) said Erica stated she slept with another man during a threesome upon returning home this morning,” the report states.

A “threesome” refers to three people engaging in sexual activities with each other. More traditional intimate encounters involve two people.

Further, the boyfriend said Loucks returned home with another woman.

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The boyfriend said they argued as he confronted Loucks “about having relations with other people,” records show.

He said he threw money toward Loucks, and Loucks kicked and slapped him.

The woman Loucks brought home told investigators Loucks asked the boyfriend to leave several times. She said the boyfriend called Loucks “a piece of (poop).”

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Loucks, who deputies said smelled of alcohol, said the boyfriend “started calling her every name in the book.”

She said she kicked the boyfriend after he “lunged” at her and she felt threatened.

Loucks said she didn’t call authorities because her landlord will make her leave “if the police keep showing up.”

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