I don't like my lover's friends. What should I do?

How do I tell my boyfriend I don't like his friend and his girlfriend? I have been going out with my other half for over 10 months now, and we are completely different in every way. And it works for us! He enjoys games, I enjoy books. But we still love to curl up and watch Prison Break together. It works well for us, but his friend is a lot like him. To be honest, I really don't like his friend that much. Or his friends girlfriend.

They aren't the type of people I would normally choose to spend time with, and we have literally nothing in common, which makes it hard to have a conversation. They all love gaming and other geeky stuff. And I'm just not that into it.

The last time we all hung out, we spent three hours playing Monopoly on the Xbox…THREE HOURS!!! When we go out for a meal, they don't drink so we end up sitting around drinking pop like some over-aged teenagers. I am twenty-bloody-three and want to drink when I am out! It feels like I'm hanging around with a bunch of kids. The girlfriend is the complete opposite to me.

I enjoy a nice dress and make-up, when I first met her she turned up in a Pokemon t-shirt. It says it all really. We have nothing in common.

The only thing we do talk about it my pet rabbit (which my boyfriend bought from her) but there is only so much bunny related talk! I know he wants me to hang out with his friend and his other half, but am I obligated to? Is there a nice way to tell him that I don't like his friend that much? I know it would break his heart if I told him I don't really get on with them. But I feel like I have to!