And now, they've apparently gone Instagram official!
Yesterday, the singer shared a carousel of Halloween pics on Instagram. Halsey and Avan look so cute in their matching black outfits! In the third pic, you can see them standing beside each other, and in the last pic, he has his arm around her shoulders.
Over on Avan's post, the second pic shows the couple holding hands as they gaze into the camera. The fourth image is Halsey from the side.
Naturally, both posts were flooded with positive comments. This person said they'll be telling their kids that Halsey and Avan were Jade and Beck from Victorious: