Guys, I accidentally called the guy I like bro and now he's calling me bro?

I called the guy I like "bro" accidentally in a little phrase over text and he took about 5 minutes to reply and sent his reply with "bro". This was yesterday and today I was snapping him and told him something nice and he sent a good picture of himself and replied "thanks bro!" I call all my friends bro and it just accidentally came out, but I never meant to refer to him like that. I know I could just be honest with him, but the thing is he doesn't live where I live so if I'm honest I don't want to scare him away and have him not talk to me anymore. We're like long distance friends and when we call we're a little flirty and he takes interest in me and my life. He's called me pretty and stuff and I know we may never become something, but I don't want to be his "bro". I'm 18 years old and I'm going to have the ability to travel more soon. I made sure to reply to him " you're welcome *his name*" I made sure not to call him bro. Do you think he got that I didn't want to call him bro or just didn't think about it?
Guys, I accidentally called the guy I like bro and now he's calling me bro?
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