I don't think we need to get over 'most' romance being heteronormative simply because it is and will continue to be. that doesn't mean we should exclude ignore the realities of non-heteronormative and, as mentioned earlier, they often give us more insights into relationships since we've removed gender assumptions or cross-gender assumptions and are just left with two people.
But in order to achieve the latter, we must remove heteronormativity as the default.
That doesn't mean we should invalidate or dismiss or marginalize heterosexual relationships. It means we should stop glorifying or idealizing heterosexuality per se above everything else (in terms of sexual orientation and gender identity).
And I'm skeptical of any statistics whatsoever insofar as sexual abuse, simply BECAUSE OF the unreported and underreported quantities of cases that are likely existent across-the-board.