1997 dodge truck 1500 v6 thermoustat reads cold but my heater works fine.The top of the radiator hose gets hot but the bottom hose is not that hot.My radiator seem to be flowing I don't understand

This link from the Sticky should help you troubleshoot the problem:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-11.html#post2043857