Why would my boyfriend unfriend his lady friend if just friends?

I’ve been in a relationship with my boyfriend for more than half a year now. Known each over a year. He’s the best and most healthy thing that’s ever happened to me.

I have asked him about certain girls on his Instagram. There is this one that he mentions he talks to from time to time, they used to work with each other from a different country. Claims that she sees him like a brother and that they’re just friends. He knows I’m insecure about her, I’ve asked him if theyve been together before and he says no.

Just found out that they are no longer following each other on Instagram. Should I ask him why? I feel like there’s more to it, but I’m not sure if I should just leave it alone and avoid an argument.

Why would my boyfriend unfriend his lady friend if just friends?
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