My boyfriend doesn't want to go to parties with me, why?

Before we went out we were "friends". Not really friends friends but i knew who he was and we would only ever meet up to go out to parties. However, we spoke a lot through text.

Anyway, now that we have been together for about and year and a bit he never wants to go to parties with me.. why?

I find it strange because i generally like going out to parties/clubbing etc because i like to dance (thats what i do in my free time). It would be nice if he would join me. But since we started going out he always says "no i dont want too, you go" whenever i say lets go out to a party or so, even if its a birthday event.

He says he doesn't like going out and prefers to stay home. which is true, he's not a fan of big crowds, drinking, loud music etc but everyone needs a little entertainment once in a while no?

ps. i not embarrassing and on the odd occasion he does go out with his friend (only twice last year)
My boyfriend doesn't want to go to parties with me, why?
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