explanation on why not to confess to me:
generally just makes me uncomfortable and i do not like ANYONE romantically in most cases.
mentioning you had a crush on me at some point is fine idrc
to give you a rundown on aroace:
aroace people feel little to no romantic and or sexual attraction.
had to set this boundary because multiple people have done this despite me telling them im aroace ^_^".. no personal offense to you if you have. just really dislike it.