That's been restored for a while. When Dick's real memories were restored (remember, he simply can't tell them from the fake Talon ones, hence why he's still Ric), we saw moments from Dick's past - including the debut of the first Nightwing costume, which was clearly shown to be inside Titans Tower. Both this costume and the next one are being worn by two of the four new Nightwings (the other two use the New 52 and Rebirth costumes). So we know New Teen Titans happened. Additionally, Donna Troy now remembers all of her conflicting origins, including both from New Teen Titans (pre and post Crisis).
This topic came up in Batgirl and the Birds of Prey. Batgirl and Huntress both love Dick (remember, Helena was Matron in the Grayson series), and Dick was dating the Defacer at the time. So yup, he had three love interests, and that's without Starfire being involved!