Vitruvius
Donor
Two; In regards to marriages and potential couples, though Napoléon was favored by many in Britain there was little to the rumors of him and Beatrice joining. However, Napoléon was known to be romantically involved with Maria del Pilar de Borbón y Borbón. As his father had married for love instead of political gain, and being raised in that atmosphere, if it is possible and perhaps likely that the Prince Imperial would follow the same route - assuming that Napoléon and Maria were that close.
Unfortunately Maria del Pilar died in August of 1879 only two months after the Prince Imperial. Its unlikely that the butterflies can prevent this. Though I do think 'marrying for love' is a possibility, given the political complication of finding a match for an exiled French prince. Which means it could be anyone, Eugenie was only a Spanish countess after all.