What happened between Yennefer, Triss and Geralt - Endgame

I just finished The Witcher 3 yesterday and noticed that something happened between Yennefer and Triss (and maybe Geralt?).

While Geralt and the others were preparing for the fight against

Imlerith the "Endboss"

Triss and Yennefer one night were sitting next to Geralt to wake them up and to wispher him a little "offer". As Geralt went there he found Triss and Yennefer, both in underwear. However as he thought the action would go on the two Girls wear him handcuff and just went away.

A little later in the game as Geralt talked to Yennefer again and ask her if she and Triss had fun and what they talked about the time after, Yennefer answered something like

We talked about anything but about Geralt of Rivia, Triss and I are no longer interested in you.

My question here: What just happened? I think nothing special happened after Geralt and Yennefer

broke the curse of the djin and Yennefer still loves Geralt

so why is she so cold now?

Is there a way to prevent this things happen?

This sounds like the ending where Geralt has attempted to tell both Triss and Yennefer that he loves them.

Turns out, they're not a fan of you trying to seduce both of them. This is seemingly communicated off-camera, and results in the scenario you mention above, and with neither of them being interesting in continuing a relationship with Geralt.