AceShowbiz -

Former lovers, Paris Hilton and Doug Reinhardt, are back together, US Weekly exclusively reports. No official confirmation has been made by the twosome, but a source close to them testifies, "They are definitely happy again."

And while a representative for the baseball player has no comment on the pair's reported reunion, Doug himself has expressed his joy of getting back together with Paris. On Sunday, July 26, he tweeted, "Laying in bed watching SportsCenter with my girl." The next day, he posted another short message, "What an amazing weekend with my beautiful girlfriend. I love her so much!" It is widely believed that the subject of his posts is Paris.

Paris Hilton and Doug Reinhardt began dating in early 2009 and were often spotted engaging in public display of affection. Already talking about possible nuptials in the future, the pair broke up in June. At that time, Paris had her representative confirming, "In response to the inquiry on whether Paris Hilton has split up with Doug Reinhardt, yes, this is true they are no longer together. They remain friends and ask that you please respect their privacy."

On the same day she announced her separation from Doug, Paris was seen making out with soccer stud Cristiano Ronaldo at swanky L.A. nightclub MyHouse. However, she insisted they are just friends.