Short for someone who is both Aromantic and Asexual (asexuality is an
orientation like bisexual or
heterosexual).
They don't experience romantic or
sexual attraction. Or they are in the grey area, and infrequently experience those attractions.
Aroace people can still fall in love, it's just not romantic or sexual (or is infrequently).
You can be asexual and not aromantic or aromantic and not asexual, but aroace means the person is both.
" She's not into you, she's aroace"