After a while, away from the only people he has a deep connection with, Keith's loneliness turned to fear. Shiro was trying to find him, reach out for him. He didn't want to see Shiros disappointment in him. And maybe he wants to hold on to the memory of a certain bonding moment. After a while, and with a little bit of help, Lance got over the disbandment of Voltron. He tried to forget about someone, and he eventually succeeded. That is, until he found them sleeping on the beach at one in the morning. Maybe he really does remember a certain bonding moment.