[doppelganger]

If this is the first time you've double barreled this guy I think you can make a thin call and make a note on what he does this with. As others said, a set would usually raise the turn w/ the flush draw present, so the only hand that really got there on the river that beats you is QJ, maybe suited in clubs. His line really doesn't make sense to me so I'll call out of curiosity.