Drew Barrymore and her fianc were inseparable at her premiere party.

The actress and art dealer Will Kopelman became engaged over the holidays.

Drew and Will appeared madly in love with each other at the afterparty in Washington D.C. for her newest film Big Miracle.

"They were very affectionate the whole night, holding hands and turning into each other to have their own intimate conversations," an eyewitness told People magazine.

Drew and Will's powerful bond was palpable to partygoers.

"[Will] never left her side," the source detailed. "They were a team from the beginning to the end."

Many of the attendees at the event were family members of US soldiers who were killed while on duty.

Drew was proud to engage with others with Will by her side.

"[Drew would] introduce and encourage her fianc to be part of the action," the source said.

Drew was previously wed to Welsh pub owner Jeremy Thomas in March 1994 and the couple filed for divorce one month later.

In July 2001 Drew married comedian Tom Green. She and Tom split in December of the same year.

The date for Drew and Will's wedding has not yet been set. The couple are currently planning the ceremony.