After smacking babby daddy LEVI JOHNSTON FOR thousands in back child support, BRISTOL PALIN has decided to plunge into a trial marriage which will be tracked on reality TV.

The 21-year-old former Teen Prego Queen of Wasilla and abstinence crusader is going to live with her boyfriend Gino Paoletti after dating for a little more than a year. They’ll make the big leap as soon as they finish remodeling the home Bristol secretly purchased last year, say sources.

The ENQUIRER learned that Bristol – whose 3-year-old son Tripp was fathered by former boyfriend Levi Johnston – bought the 3-bedroom, 4-bath home   last July. It’s just across Lake Lucile from her parents house in Wasilla, Alaska.

Pipeline worker Gino, 21, and the former “Dancing with the Stars” finalist have made the renovations a joint task, and when it’s finished this summer, they’ll live under the same roof, say sources.

Meanwhile, their home renovation adventure will be featured on the upcoming Lifetime reality show “Bristol Palin: Life’s a Tripp.”

“Bristol and Gino are crazy about each other,” revealed an insider. “They’ve talked about getting married, but they think it’s a good idea to get a feel for living together before making it official.

“Bristol thinks one reason her relationship with Levi went south was because they really never had a place of their own where they could grow together as a couple.”

But her feisty mom Sarah, the Republican ex-vice presidential candidate, is none too pleased that her daughter, who recently toured the country preaching abstinence and safe sex, will be living with her boyfriend.

Bristol tried to placate the family values politician by promising that the arrangement would be temporary.

The couple believes there’s a good chance they will be married by the end of the year!