No, it doesn't, you're just forcing pieces to fit together.
Firstly, If she knows he's gay and is helping him, why go out with him? Couldn't she have just played wing woman for him instead? Why would she help him when she clearly has feelings for Riku too? Why, try and seduce MC and even attempting a confession in the prior chapter? It literally would make no sense. Secondly, we haven't gotten the full picture as to why she's dating him in the first place though it should be obvious she's not into him romantically cuz she's interested in Riku. Thirdly, counter-argument, it's heavily eluded that Takt has an inferiority complex towards Riku and he dated kouhai cuz she heard about it from Riku to spite him. Riku refuses to change the status quo because, to him, he can't just confess and start dating the girl that was his best friend's girlfriend prior and doesn't want to ruin their friendship (which we've been shown how much he cherishes).