How far is too far when it comes to dating a nerd?

I've been seeing this guy for around 8 weeks and i was always aware he was abit of a nerd but it didn't bother me all that much and I thought it was kinda cute.

he's a classical violinist and is very well educated and sophisticated but he also loves lego, video games, star wars etc.

he's really cute in a hot nerdy way and really sweet and kind but one thing I noticed has given me a massive ick.

Last weekend I spent the night at his. Let's just as it was one of the best sleep overs I've ever experienced and then the next morning we woke up and I went into his wardrobe to borrow a shirt to walk around the house in..

I look down and there was a this like furry fox head mask. I laughed and said wtf and he was really casual about it and was like "oh yeah me and my friends like dressing up as furry animals sometimes" he continued to put the head mask thing on and play the violin whilst dancing around the house.

I awkwardly laughed but in the back of my head I thought "this guy is 28 and dressing up as a fox".

He was telling me all about it and saying i should come out with him and his friends next time they meet up dressed as their characters and stuff.

I just nodded and grind and said "yeah maybe" and tried to change the conversation and later left
Updates
1 mo
Im sorry but has actually kept me up at night. I actually embarrassed for him as horrible as it sounds. Im thinking im gonna have to break it off as horrible as it sounds. I dont to break this guys heart but I don't know why but i find it mega creepy and immature for his age. I can't tell him if he wants to be with me he needs to change his hobbies and friends he's better off finding a girl who shares similar interests
How far is too far when it comes to dating a nerd?
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