The law considers 18 and 19 year old adults, and you are not the law. Once you turn 18, you are comsidered an adult. It's been that way since the dawn of time. End of story.
No, nobody should care if it's care if it's legal and both people are full grown adults. It should NOT be investigated because the younger person is not a minor. It's only "dangerous" if the younger person isn't 18 yet. Making a big deal out of an 18-25 year old dating someone who just happens to be more than a decade older than them makes you look like a douche and people need to stop infantilizing adults younger than 30.
No, it stops mattering once both parties are over the legal age of consent. (18) If both people are considered adults by the law it's no longer anyone's business.
