Personally it doesn't affect me much.
If a girl said "I'm into hip-hop dancing" I might talk to her about artists, since I'm into hip-hop, but I wouldn't switch gears and try and be all about hip-hop dancing.
I like reading, if a girl likes it too we can talk books. However, that doesn't mean that I'm going to pretend that I like what she reads.
I also usually tease them a little bit about their hobbies. Nothing rude, but I'll throw out some jokes.
If a girl said "I'm into hip-hop dancing" I might talk to her about artists, since I'm into hip-hop, but I wouldn't switch gears and try and be all about hip-hop dancing.
I like reading, if a girl likes it too we can talk books. However, that doesn't mean that I'm going to pretend that I like what she reads.
I also usually tease them a little bit about their hobbies. Nothing rude, but I'll throw out some jokes.