Some things to make clear;
Not experiencing romantic attraction or love is not the same thing as “not caring”.
Not experiencing romantic attraction or love is not the same thing as “lacking empathy”, with a corollary that having no, or low, empathy, is not a bad thing.
Sexual relationships do not require romantic elements in order to be valid, meaningful, or important to you.
A sexual relationship not having romantic elements does not mean it is abusive, and, similarly, romantic elements do not necessarily make a relationship non-abusive.
Aromantic people are not necessarily even interested in sexual relationships, long or short term, regardless of whether they are allosexual.
It’s possible to have long-lasting intimate sexual relationships with people without it being romantic.
Intimacy and romance are not the same thing.