Sadly not, but in the german Wikipedia article about the french-germen-friendship is a hint that some considered a confederation.
http://de.wikipedia.org/wiki/Deutsch-franz%C3%B6sische_Beziehungen#Europ.C3.A4ische_Integration
It is not an ASB. Saying it is an ASB and mentioning of 'heritary eminity' tells me that you know nothing about french-german relations. First there is the Élysée Treaty from 1963(which was revised in 1988) which restarted the friendship and cooperation between both nations.
Then there is the Franco-German Ministerial Council meeting twice a year since 2003 and the Blaesheim-Meetings since 2001.
And there is the Franco-German Brigade created in 1987.
And some french presidents and german chancellors were friends (de Gaulle/Andenauer, Giscard d'Estaing/Schmidt, Mitterand/Kohl).
http://en.wikipedia.org/wiki/Franco-German_cooperation