Best part is Anna saying her piece on these two guys deciding her feelings for her. That "the mask fell off" moment when characters finally open up and say things without restraint is always entertaining and often cathartic.
Anyway, I'm kind of relieved that Anna isn't getting railroaded into becoming Kazuhiko's love interest (if Sosuke had his way this might be the direction this is going in). It's pretty believable that she isn't giving up so easily for feelings she has held for many years. Would've been terrible writing to have her suddenly be in love with Kazuhiko instead.
Don't be someone's rebound, and don't make doubly-losing heroines. That's what I want to see from the male lead. And maybe fall in love with someone else not involved in a love triangle.