A romantic relationship isn't about sex alone. This is mutual trust and respect above all.
I'm not saying that writers should completely rewrite the personality of all characters and forbid them to somehow express their horniness. It would just be great to get at least one line of dialogue that allows you to give up intimacy, but not end the romantic relationship. It's all.
Im not asking to direct new cut-scenes according to my preferences or introduce new characters. Just one line of dialogue. All. This will be enough to start.