Manila spent the first weekend of August underwater. Two nights earlier, at the New Frontier Theater in Cubao, Quezon City, a sold-out crowd filled every section for Dustin Yu and Bianca De Vera — the reality-show tandem known collectively as DustBia — for a fan meet that outsold its own VIP, Loge, and Balcony tiers before doors opened. The timing wasn’t lost on Dustin. “Filipinos are going through a lot, but our fans gave us a kind of love that, for me, no one can ever match,” he told reporters after the show — a line that could have read as tone-deaf, except the flooding was the acknowledged backdrop of the entire weekend, not something the event was pretending not to notice. A Fan Meet Three Networks Agreed to Split “DustBia: Love, Actually” was co-produced by Sparkle GMA Artist Center, ABS-CBN Events, and Star Magic — three talent agencies that normally compete for the same audience, sharing a bill for one night. Dustin and Bianca met on Pinoy Big Brother (PBB), the long-running reality competition, …