Does this qualify as cheating?

My boyfriend and I have been together for a year while still in high school, and he’s involved in a lot of extracurricular activities, like sports. However, he recently became very busy and has had less time for me. He keeps apologizing but hasn’t made any changes to address the situation. One day, I noticed he was talking to someone he called a friend. I asked him about it, and he assured me it was nothing. I chose to trust him. As the months went by, the issue of him not having time for me persisted. Then I heard from someone that he attended an event I wasn’t aware of, where they played a game that involved confessing crushes. Apparently, he and this friend both admitted to having feelings for each other, all while we were still together. What should I do?