Something i just cant swallow...

Hes been talking to her and has lied about it...trying to cover duration of call on a new phone with something completely un-related...then turns tables on me ..calling me names...when hes the one whos been caught....i just dont know what to do..im speechless...and on top of it all..im hurt...i feel betrayed....he even brings ups old stories when hes trying 2 defend himself....im hurt...