(21F and 23M) I'm suspecting that my boyfriend may have been unfaithful. What steps should I take?

I'm a 21-year-old female and my boyfriend is a 23-year-old male. We've been together for a year and a half. Recently, on February 1, 2025, he turned off his location, which is unusual for him. He typically lets me know when he does this, mainly because he usually turns it off to hide the fact that he didn’t go to work from his mom. But this time, he didn’t say anything to me. Earlier that day, I called and pointed out that his location showed he was at his workplace eight hours ago, but then later, it showed he was at home. His response was just, “Oh, that’s weird,” and then he asked if I had to work. When I told him I did, he said he went to work briefly but left early. Later that night, his location was completely off, showing “no location found.” I called him again and asked if he had turned off his location, and he confirmed that he did. When I asked why, he replied, “I don’t have a reason; I just did.” This was strange since he always insists that I keep my location on and never turn mine off. During our first call, instead of simply saying he had turned off his location, he just said, “Oh, that’s weird.” The story changed when I called again; he claimed he had been home all day and didn’t go to work, which doesn’t make sense because who turns off their location when they’re at home? Does this seem suspicious? To summarize: my boyfriend turned off his location at home for no reason, which is out of character for him. He usually only does this when he’s trying to avoid his mom finding out that he skipped work. Initially, he said he was at work early but then later claimed he was home all day. Does this suggest he might be cheating?