2003 only runs hot when idle for a long time.

[HondaGirl2003]

i got a 2003 honda civic ex and all my coolant levels are full and i replaced my head gaskets a half a year ago. When i was in idle for a while it steadily got hot. What could be the problem? O and the radiator fan on the passenger side doesnt turn on .

 

[92lseg]

If its slowly warming up sitting if say probably your radiator