Does facetiming with a person from another state considered cheating?

Have been in a relationship for a little more than a year amd recently discoveres he has been face timing for hours with a girl from florida that he used to go to school years ago, he denied it at first and once i showed him prove he admitted he denied because he thought i will be mad and he is onlu talking to her. I dont do these things and i consider any guy who will talk to a her daily over the phone and face time is looking for more than a relationship and on top of that lies about it. What should i do? Why he is having that behavior now instead of at rhe begining of our relationship.
Does facetiming with a person from another state considered cheating?
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