Is this suspicious from my boyfriend?

I’ve been with my boyfriend 2 years. One time last year the very beginning of the year I saw him and this woman followed each other on tick tock. As soon as I mentioned it they both unfollowed each other. Turns out he was cheating on me with her the whole time. We moved past this as we were NOT in a good place and stressed as we recently had a son.

This week I saw him follow a girl on tick tock they both followed each other, I mentioned it. Then I saw her go live so I went to watch the live, the next day after this they both unfollowed each other on tick tock? Is it just me or is this suspicious?

Is this suspicious from my boyfriend?
Post Opinion