What do you think about the name Bernie for a boy?

So my partner loves the name Bernie, and wants to name our first son that. 
Bernie, not Bernard. The name would be Bernie. 
I'm on edge about it. I honestly do like it, and think its cute. But is it a name that would get him made fun of for some reason? Is it "adult" enough for later in life. 
As you can tell I'm paranoid about giving my child the perfect name xD
Would love some more opinions
Thanks you!!!

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