is this cheating??

Okay, so I found out that my boyfriend of a year has been talking to his ex lately. I know they've been friends for a while but they've dated off and on for two years. She has a boyfriend but still continues to text him, and ask to facetime. She even comes to him about things before her boyfriend. For "Comfort"? We ended up taking a break and after we broke up he said. " i don't like her, but I still have feelings" is that cheating?