Paris HILTON and DOUG Reinhardt HEAT UP?

Are things getting a bit more serious between Paris Hilton and Amanda Bynes' ex-boyfriend Doug Reinhardt?

Hilton and Reinhardt did spend a lot of time together this weekend, according to sources.

I just got word that the hotel heiress and the young man best known for appearing on The Hills were with each other on Valentine’s Day.

Reinhardt even gave her a present for V-Day.
So what does a man get the gal who already has everything?
Sources reveal that Reinhardt gave Hilton a print of an Andy Warhol piece depicting Marilyn Monroe.

Hilton's grandmother called her Marilyn Monroe when the celebutante was a child. Plus, Hilton has even compared herself to the Hollywood legend. "There's nobody in the world like me,” Hilton once said. “I think every decade has an iconic blonde, like Marilyn Monroe or Princess Diana and, right now, I’m that icon."
Reinhardt was also by Hilton’s side the night before Valentine’s Day when she threw herself a pink-themed party at her L.A.-area house for her 28th birthday.

The question still remains if Hilton and Reinhardt are an actual couple. Sources say that their relationship right now is simply about “hooking up” on a regular basis.
“She's not serious right now with anyone,” one source said.

Reps for Hilton and Reinhardt declined to comment.

Reinhardt and Bynes ended their two-month romance in mid-January. Hilton’s last major relationship was with rocker Benji Madden, but they called it quits in November after being together for nine months.

They are both pretty and stupid and have family wealth so they will probably get married!