Dear LIB readers: My man keeps celebrating his female friends on instagram and I don't like it

From a female LIB reader...

My husband keeps posting photos of his female friends on his instagram saying its either their birthday or wedding anniversary or something and I don't like it. Just yesterday night, he posted a photo of his colleague saying it is her birthday. I have told him repeatedly that this his action makes me jealous, yes jealous but he says he doesn't see anything wrong with it. Am I over reacting or not? Is it even right for married men to be celebrating their female friends on their instagram pages, especially when their wife is one of their followers?