Nemtin and the former Hills co-star were rumoured to be engaged earlier this year, but Port rubbished the claim and noted that both she and her beau were too young to marry.
The famous couple shied away from the spotlight during their yearlong romance, with Port commenting in April that she and Nemtin weren't interested in documenting their relationship in a television series.
Port has now seemingly confirmed that she has separated from Nemtin, telling reporters at Snapple's National Iced Tea Day gala in New York City on Sunday that she is newly single and focusing on her career, according to the Daily Mail.
She apparently said: "I don't have a boyfriend… It's definitely different, but I'm enjoying my time focusing on work and keeping busy."
Port most recently hosted the dating gameshow Genuine Ken, which has wrapped up its first season on Hulu.
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