There should've been a pop up prompt if you have popups enabled. But also the next update will be addressing the pop ups all together and turning them into inputs instead! Which will be coming very soon within a couple weeks! Check the last update log I posted for more info!
rejecting aiden in anyway isnt going to make them hate you either way because you guys are bestie but I just think I'm a super sarcastic person with my friends so it def plays into their relationship. But ill be more mindful of it in the future