Former childhood pen pals Carey Mulligan and Marcus Mumford may be on the brink of heading down the aisle. Radar Online says the low-key couple plans to get hitched this weekend with a vow-swap in the English countryside.
"Carey and Marcus are counting down the days till they tie the knot! She is absolutely walking on air and can hardly contain her excitement," tattles a source. "They don't care that some of their friends think they are rushing things. They are madly in love and know they are perfect for each other."
The actress, who previously dated her "Wall Street: Money Never Sleeps" co-star Shia LaBeouf, reportedly got engaged to the rocker last July, five months after they met at a Mumford & Sons performance in Nashville, Tenn.
"It's going to be an amazing weekend as they will be surrounded by their closest family and friends," bubbles the source. "It's a dream come true for Carey."