The rumors of an engagement between Carey Mulligan and musician Marcus Mumford continues to heat up after the actress was spotted wearing some new bling on her ring finger recently.

Carey and the Mumford and Sons singer had only dated five months before the alleged proposal, but have known one another for quite some time. Carey and Marcus were actually pen pals as children.

Mulligan was spotted wearing what appears to be an engagement ring while waiting for a friend at the Sydney Airport in Australia on Tuesday.