I doubt she'll be content with just one-sidedly loving Yuu for very long anyway. No one is ever content with just that.
She is content with just that if i believe to all her statements. What she wants is actually to feel in love. She never ask Yuu to return her feelings. And to make it worse, Yuu makes Touko has a partner who is willing to let her loves and won't fall in love to anyone else oh and also let her kisses as she please
Yuu should just dump Touko right now or else she is going to become miserable in the chapters to come (in case she develops feelings for Touko).
Also what is Touko's end game anyway? Flirting with Yuu till her graduation and then leave? Some tension is needed in their relationship to get Touko off of her high horse.
Clearly stated in the old chapter Yuu choose to stay tho. That sounds like an extravagant plan, but i bet that's what Touko will do. Let me quote Sayaka. "This is Touko after all
Seems like people hate Touko for being a jerk but i still love her. Seems like i'm also get her curse