>>105903015
The only one to directly, unambiguously tell him she loves him was Wakamo.
He is canonically being stalked by Wakamo, Kotama, Nodoka, Serina, and Izuna.
In their Momotalks, and in particular during L2D segments, quite a few have thrown themselves at him. Kisaki, Chinatsu, and Shigure are probably the most direct ones, while others like Seia and Miyako have repeatedly invited him into secluded/private areas and indirectly implied that they wanted to be pushed down.