Couple with heart: person, person, medium-light skin tone, light skin tone emoji π§πΌββ€οΈβπ§π» is part of the People & Body and Family emojis. On some systems it can be accessed by using :couple_with_heart_tone2-1:, :couple_with_heart_person_person_tone2_tone1: or :couple_with_heart_person_person_medium_light_skin_tone_light_skin_tone: shortcodes.
It was approved as part of Unicode in 2020 so it should be displayed properly on newer devices.