wow thanks. that was a really insightful post. OP here btw.
okay now the thing is that my gf had actually been feeling some unhappiness about our relationship but had kept it to herself. so this feeling has been building up. and i only just found out about it.
she herself cannot pinpoint exactly what the problem is, but the closest thing we can guess is that she's sad over how we disagreed and how i handled our arguments...leading to her feeling sad and unsatisfied. all this while i never knew it was such a big issue to her...