simple
than the gf isn't the wife-to-be for you, get another one
the same theory goes to ladies as well
to love is to accept the past and move on, to love is to trust the
other half full-heartedly and not even a single doubt like checking
hps, clothes for stains, checking on the time table for each
other's activities. knowing what each other is doing.
if you truely love one another.
Respect
Mutual Complete Trust!!
Basic Understanding (Not in-depth understanding)