If you’re swiping on dating apps for hours, you’re not alone — and a new lawsuit claims it’s by design. Dating apps such as Tinder and Hinge are intentionally addictive, a class-action lawsuit filed in federal court in California on Valentine’s Day claims. Hidden algorithms push users to stay on the apps and “gamify dating” — counterintuitive to the apps’ intended purpose to help people find connections and form relationships, six plaintiffs contend in the lawsuit. “The truth is the apps are designed to be addictive,” according to the filing. “Match’s business model depends on generating retur…