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1 definition by Jo'sBar

 
1.
Someone who can't commit to one person, but is always looking for another individual to go out with - even when they are in a relationship. Most commonly done by "shopping" or checking out online dating websites.
Her boyfriend was such a shopper - they had been dating for a year, but he was always responding to new profiles on plentyoffish and lavalife
by Jo'sBar December 16, 2008