NEW YORK (MainStreet) — Forget buying dinner. You don't even have to pay for drinks these days. Millennials just need a smartphone and a "hookup" app to get their free love.

Boomers may have launched the sexual revolution, but Gen Y is definitely perfecting it.

Tinder is a case in point. This smartphone app allows "players" to post their profile photos, linked from their Facebook page, to find interested "acquaintances" with benefits in their immediate area. Right-swipe on the pic and you're in. Left-swipe and it's time to order another drink and keep shopping.

Amanda Lewis has laid out the ground rules of high tech hookups for TheAwl.com. She explains that the app is not always a sure thing, defining the Tinder term of a "flake-out."

"When two players agree on a date, time and location for a drink or a meal 'in real life' but then someone ignores a confirmation text or both parties simply forget to follow up and the date passes and nothing happens," Lewis writes. "[It] occurs more frequently on Tinder than on other sites, frustrating older users who are not accustomed to the Millennial habit of making multiple plans and choosing the best option at the last minute."

But Tinder is not the only game in town. Loveroom is an app that is in pre-launch mode, promising to "help you rent your spare room to attractive people." O.K., so now money is involved. Look no further than The Apartment. We may be crossing a line here, Gen Y.

Caroline Kent writes for the London Telegraph and describes her "dating" experience with Tinder.

"We ended up in the sort of Soho tequila bar where dinner dates come to die," Kent writes. "We held hands as we walked to his place, kissing on a quiet square in Clerkenwell and I felt like a spontaneous 17-year-old. Well, right up until this morning, when he asked me how I rated the sex so far from one to 10. Tinder isn't a dating app, it's the Yellow Pages for ego-boosting one-night-stands."

Sounds like Kent may have posted a low score for her teammate.

"Just think of all the money I'll save on dinner dates now I can skip straight to the unfulfilling sex," Kent says.

--Written by Hal M. Bundrick for MainStreet