I don't know if this is just intended as an observation or if you want advice, but is it possible they're picking up a judgemental undertone when you talk to them and responding defensively because of that.

I mean, you like that they express an interest in your dancing, but the chances are they aren't interested in dancing on any personal level - they're actively taking an interest in your hobbies because it's a nice thing to do, to learn more about a person and relate to them better. They want to tell you about the shows they're excited about because that's something they care about and they want to talk about it. Try to remember that when someone is telling you about a show they like, they're telling you about themselves, what they like and why, what interested or resonated with them, these things are revealing part of who they are to you.

I only say this because I used to be to frank and free with my dislikes, and I used to subconsciously be quite judgy about other people's preferences and it came out in how I spoke, resulting in conversations that were unnecessarily antagonistic as we both tried to justify our lifestyles and preferences. Now I try to take an interest in other people's hobbies, even if I personally have no interest in pursuing them, and I often find interesting things and ways to relate to people that I never would have if I blew the topic off as something I don't like or care about.

E: Also I don't like TV shows either.