Biggs raises both of his eyebrows when the dream is first mentioned - and begins laughing to himself before Luke finishes the story. He has some vivid memories, himself, about the first night he'd spent with Luke: the temperature drop as the suns set, Luke's expression when he gave Biggs his answer, settling in for the night next to his then best friend - and all this time, he'd had no idea what was really going on with the boy laying next to him. He's surprised, but accepts adolescent Luke's desire for him as a compliment. As his laughter dies down, he shakes his head in disbelief. "...And you managed to hold on to that for five years?!" That was some dedication to a secret. They both had their reasons, of course, so Biggs won't tease him any harder - at least, in regards to his silence. His smile never faltering, and Biggs disentangles himself only to lean over Luke, pinning him against the 'grass.' He looks him in the eye, mirroring his mischievous look. He cannot push himself too far, but it feels good just to be like this. "This must be a dream come true for you, then."