American going to UK

hey, I am an american and i am currently engaged to a british navy officer (well... he's almost an officer... he's still in training) but our agreement was that we dont get married, and i dont move over there till i am done with college. (yes this agreement sucks) I want to get a degree in nursing, but im not sure how compatible an american nursing degree would be with european nursing. I have alot of family in the field but they dont know my plans (they will say im too young to be engaged lol) so i can't ask them. I was thinking about getting my bachelors degree as an RN. However i'm not sure how everything works. I know i dont want to wait and train over there, because i dont want to wait three years to be able to start training. Also ive heard that LPN's cant work over there... so im just wondering what i should do. Thanks