Axel von Fersen, the Swedish soldier and count, is not known for any great victories on the battlefield or in politics. His celebrity came from the attention he received from a certain queen of France. Although there is no solid evidence of Marie Antoinette and Count Fersen's relationship being more than platonic, it was still a hot topic among the various European courts. In other words: Ladies, he is off limits.
Of course that didn't stop Bess from making out with him and then feigning guilt as she wrote to Georgiana about the dalliance. Georgiana, herself, couldn't really see what all the fuss was about when she met him in 1786:
"He is reckoned ugly here, because from the idea of Mrs. B's liking him, a great beauty was expected. He has delightful eyes, the finest countenance that can be, the most gentleman like air. Thank God I an't in love with him."