It's kinda hard to be equals with her when he's basically contributing very little right now to their plans. A little frustrating that Yuu's on the typical weaker side among male romance manga MCs. This guy needs to step up his game, he doesn't seem determined enough yet.
It also doesn't help that in the strategy meeting the other chapter, he was basically the least smartest in their 4-person revenge team. Touko is carrying hard for him right now, but I hope he can do something at least. Seeing him merely getting dragged around being told what to do is getting a little cringy when they're supposed to be 'partners in crime' for this revenge scheme.
Man, be deserving of that sweet revenge, go find that determination and contribute something!