Paris Hilton and Doug Reinhardt: Back Together!

Less than two months after she dumped him and locked him out, Paris Hilton has totally gotten back together with ex-boyfriend Doug Reinhardt!

"They are definitely happy again," a source close to the couple reports.

On Monday, Doug Reinhardt, 23, posted on his Twitter page: "What an amazing weekend with my beautiful girlfriend. I love her so much!"

The day before: "Laying in bed watching SportsCenter with my girl."

Doug's probably overcompensating and making sure Paris, 28, doesn't attack him for flirting with Kendhal Beal again. Whatever makes him happy ...

Paris Mounts Doug

Align CenterHaving patched up their differences following an ugly breakup in early June, Paris Hilton can't wait to mount Doug Reinhardt in public again. [Photo: Fame Pictures]

Paris Hilton famously declared that she'd marry Doug Reinhardt - who dated Lauren Conrad on The Hills before moving on to the ho-tel heiress - last April.

"He's going to be my husband," she told E! "We're best friends. It's not like we just met. We've known each other over the past year. I was in a relationship before and we reconnected. I'm really in love and really happy."

Their previous run was four months. We give it at least 2-3 more this time.