Why can't I see someone's activity on Instagram?

[abcdefghijklmnopqrstuvwxyz]

I haven't been able to see my boyfriend's activity in my "activities" section. It used to show any photos he liked/commented on/whoever he followed. Now I don't see anything from him! Even if he liked one of my pictures, it doesn't show up there... I see everyone else's though. What gives? He did not block me, as we both follow each other.

[Steven]

he probably has the invisible on for some people and he does not know he did that