I don't know if anyone else has gotten this, but about the last 4 or 5 months I've been asked by people that I've never met before "Oh what part of Ireland are you from?"

I've been living in the North East of England for 1 year and 2 months now, originally from Florida. And before it seemed like people could tell I'm from the states when I first came here, and now everyone seems to think I sound slightly Irish lol
Is it because Americans and Irish people both pronounce their "R's"? Or maybe I'm picking up the accent here in certain words and the combination sounds Irish?
I feel kind of sad sometimes because I don't really want to lose my American accent. It's part of who I am, but I guess it's just another thing to adapt and change to. Anyone else experience this?