[stillnaive]

How are you playing? With this line and without a better read on his play, he could be open-raising with an A10s+, JJ+ type hand, but I'd suspect PP less often given the lack of a flop bet. He could see you as mid pp or something and suspect you're easily pushed off on the river. He came alive with the ace, for what it's worth; I'd say you're probably ahead and I'd call.

A cont bet on the flop could help rule out the flush draw, and that definitely hurts when making this decision here. If he had floated you and called your turn bet with a four flush/pair, that would make sense, too. But, that's something that's kind of hard to tell since you don't have a great idea of where you're at.