So Trollfer said that Artemis and Minerva "kind of dated" for awhile but then she broke up with him
And headcanon says this is because Minerva realized she was fighting a losing battle; Artemis was too preoccupied with/made infinitely more happy by calls with a certain elf female. So Minerva stopped trying because she knew Holly had already won.
And, to note, this “breakup” apparently had zero effect on Artemis at all since he never ever mentioned it or in any way seemed upset by it. It was like it never happened because for him the relationship never actually happened