OMGEE i thought miss dumb-dumb meant the same love the megane gurl has for her.... I'M WRONG?!?! MY YURI-HEART!! O_O
You're not necessarily wrong, they may both have the same feelings. But either way, the MC assumes they have different feelings, that it's ambiguous whether she's right or not is the real tragedy here. That, and her lacking the courage to find out for sure.