Every shared activity feeds the Jason-Lucia bond: robberies, billiards, mini golf, kayaking, diving, parachuting, walking on the beach.
In the full transcript of the July demo at Rockstar North (published today by IGN as “GTA 6: The Big Interview” — the same demo that produced the first impressions in August, now in full Q&A form), Rob Nelson, co-studio head and head of development at Rockstar North, explicitly listed which activities count as “quality time” for the bond: “You manage the relationship the way you'd take care of any relationship — by spending time together. Being out in the open world and exploring together, or doing activities together — billiards, mini golf, kayaking, just everyday things. Or robbing stores together, robbing banks together. Whatever way players choose to spend that time together, it'll have a positive effect on the relationship.” A little later in the same demo, he gave a more detailed list: “All of that counts as quality time for Jason and Lucia: robbing together, walking hand in hand, going to the zoo, studying wildlife, scuba diving, skydiving, a walk on the beach, kayaking…” What this adds to the Archive: until now the only confirmed example of a shared activity that “counts” was fishing with Cal (c-086, An Extended Look) — this is the first time Rockstar has explicitly given a full, named list. Answers u-activities-3. Update 16/10 (Bloomberg, see #c-267): in the same demo, Jason asks Lucia out, they walk hand in hand, exchange a kiss, and go to the gym together (Jason does squats, Lucia runs on a treadmill) — new specific bonding activities beyond the already known list.