Ferdinand, a complete stranger in his new home, started to get close to one of Queen Elisabeth's ladies in waiting, Elena Văcărescu. Elisabeth, very close to Elena herself, encouraged the romance, although she was perfectly aware of the fact that a marriage between the two was forbidden by the Romanian constitution (according to the 1866 Constitution of Romania, the heir-presumptive to the throne was not allowed to marry a Romanian).
The affair caused a sort of dynastic crisis, in 1891. The result of this was the exile of both Elisabeth (in Neuwied) and Elena (in Paris), as well as a trip by Ferdinand through Europe in search of a suitable bride, whom he eventually found in Queen Victoria's granddaughter, Princess Marie of Edinburgh.