Is it strange that my boyfriend unblocked his ex-wife?

So my boyfriend of four months confesses to me that he unblocked his ex-wife on Facebook because he wanted to get closure about his dog that they shared back when they were married. He then admitted that it wasn't all about the dog, and that he should have not done that, and from what I know , he blocked her again. I was a little upset when he admitted all that to me. Should I still be concerned? I never doubt his love for me. I know that he truly loves and cares about me. I am a bit concerned that he's trying to show off to his ex that he's now in a relationship.

Is it strange that my boyfriend unblocked his ex-wife?
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