I kinda got in first before it could be a problem. Told DH he wasn't allowed to use my machine until I had given him a lesson in how to use it - which included how to wind the bobbin.
My DH does 'stitching' to make 'manly' things like tool bags. He also does knot work - I love to tease him by calling it macrame (which is not 'manly' - hehe)
I'm sure your DH will work it out when he needs to. Until then, enjoy your shared interest! Good on you both.