Heart shaped lock

I need a heart shape lock design, I don’t want a key, what I am hoping for is a 3 pc design, where you have the 2 flat heart shape pieces with a “u” inside with fish hooks. This would make the lock

then another “u” shape piece with fish hooks as well that would lock into the heart lock, once together it could not come apart…

The fish hooks would hold them together …

If you have a better way that is fine but in the end I want a heart shaped lock cheap and easy to build that won’t unlock, woth no key…