Hallmark’s A Costa Rican Wedding sounds glamorous, but shooting in the jungle was wild, full of critters and — at times — muddy for stars Rhiannon Fish and Christopher Russell . “Right off the bat, Chris and I just got along so well,” Fish, 33, exclusively told Us Weekly while promoting her new rom-com. “We joked that maybe part of it was a trauma bond.

” The actress explained that the Costa Rica-based movie showed off the beauty of the country as well as a few of the more treacherous parts of its jungle. “A lot of it was really high stakes, stressful situations that we were put in,” Fish said. “But we formed this very close friendship very, very quickly.

And I think that that very much translated into the characters and their relationship as well.” A Costa Rican Wedding follows clumsy maid of honor Emily (Fish) as she ventures into the jungle with best man Ryan (Russell), who happens to be her nemesis, to find the bride’s lost wedding rings. The pair must locate the items in the wild while keeping their mission under wraps from the bride and groom.

During their journey, the duo encounter a lot of wild animals, including monkeys, alligators and a tarantula that lands on Emily. “I was so scared,” Fish told Us of the spider scene. “It was just truly the bravest thing I have ever done in my life.

” The actress joked that working with the creature helped her become more humane about “ethically removing spiders from my house,” even getting a “sp.