Boyfriend chooses friends over me because "we spend a lot of time together"

So, me and my boyfriend live together. occasionally we'll make plans to go out and do something or binge a few episodes of our fav tv show together. but whenever his friends text or call to hang out, he drops our plans completely. last time i brought up i wasnt ok with him just dropping our plans without saying much he just goes "but we already spend so much time together". he sees his friends a few times a week... should i just accept it or do something about him dropping our plans? he just did this to me though, we sat down to watch our fav tv show today and his friends come over unannounced and he just gets up and goes and sits with them in the kitchen.