You have to tell him (Fruk)

When Arthur and Francis get drunk on the same night at the same time, Arthur never expected to get pregnant himself. He blamed it all on Francis, or the bloody perverted frog as Arthur would call him. Soon the Brit raised two capitals, Paris and London. The girls he learned to love. Even though they were both and accident, he still loved them with all his heart. Francis was never supposed to know, but he did. When the F.A.C.E family visits Arthur after a long time, they all discovered that a burden was made...

[REMINDER: THIS DOESNT HAVE ANYTHING TO DO WITH MY OTHER STORY]