[Chaoslord]

i dont think theres any value in betting here. the board hasnt changed (T8 was the nuts before and after the river) if he called with some 2 pair thinking he was good, then hes gonna call again, if he had some sort of draw your top pair should be enough to take it.
of course theres a small chance he had a flush draw and somehow made 2 pair with the jack accidently, but thats not very likely imo