Obviously, you'll have to try again with another connector. It's like any plumbing, we're often cautious about over tightening and end up with a leak.
Once you get it repaired, buy a brass garden hose quick connect, sold in the garden department of your big box store. Screw the male end onto your water connection, using pliers to get it tight. Screw the female end onto your fresh water hose. Now when you connect your water, it's just a quick connect. The reason for doing this is to take the stress off of your water connection. The constant hose connecting and disconnecting ruins the connector your having issues with.
Don & Mary
2014 Newmar Dutch Star - All Electric - 450 ISL
2016 GMC Canyon 4WD Crew Cab