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1. Adam Levine and Nina Agdal

Adam Levine has another hot, young Victoria's Secret model in his life this summer. This time, she's 21-year-old Nina Agdal. They have yet to walk a red carpet together, but apparently they've been going out for a month or two.

Will they make it to September? 12% chance — Levine likes models, and variety, way too much.