Lincoln and Ann Rutledge

[STS Lincolnite]

I understand, from reading this thread, that Ann Rutledge was still engaged to another man at the time of her alleged relationship with AL. Is it possible that in light of this and the customs of the time that there was no overt "courting" and that letters would have been kept to a minimum or even destroyed? It seems to me, especially considering the "social rules" of the time, one of the only things worse (with regards to the pre-marriage ritual) than courting another man's fiancée would be flaunting it - whether or not the man Ann was first engaged to was around to object.