Oh, I feel your pain. I've been put in this situation a number of times and its always uncomfortable. I just don't have the same interests as most women. I don't care for shopping (I do most online shopping and when I have to go to a store, I know excatly what I want, because I looked for it online. I'm in and out in 10 minutes tops!). Mani/pedi what's that? Make up, yeah because I'm sure the horse cares about that.
Just try to make the best of it. Just keep similing and try to be as nice as possible. Try to bring up topics that are neutral (ie traveling) Good luck!