The "Euphoria" star rode a Sea-Doo with the muscular guy, who has yet to be identified, on Friday, in photos obtained by Page Six.

Amid her latest ad campaign controversy, Sydney Sweeney was seen enjoying a lakeside getaway with a mystery man. The Euphoria star appeared relaxed and cheerful as she spent one-on-one time with the man.

Sydney Sweeney is living her best summer life, and the world wide web is loving it. The Euphori a star was recently spotted enjoying a lazy lake day in Idaho but it wasn't so much the hot weather or her sassy swimwear that had everyone talking. It was, however, the company of a brooding, handsome new face: a mystery man whose name is not known.