2017-04-17 14:31:36 UTC
[Martin Lynch-Gibbon is conflicted between lovers.]
The situation implied, therefore, or perhaps I should say however, a
two-way jealousy: yet it has been a long time before I have become aware
of this implication.
Iris Murdoch, A Severed Head
Is "was" also grammatically correct here, instead of "it has been"?