I've seen it happen to my brother. Went to a restaurant with him, his wife, and at the time maybe 2 year old kid. Were black, his wife is white. Everyone else in the place seemed to not give a shit, just some people having dinner, some elderly couple comes in and gets seated next to us. After maybe 15 minutes they pull their waiter over and request to change tables away from us. We were not being loud, their kids is well behaved not crying or anything, and my dad leans over and is like I heard them a bit and seems like they have a problem with you guys...
like seriously fuck these types of people.
Now that I live in Japan I have been lucky enough for most people I know, care about, and meet to be very nice and loving. When I am dating someone they are all supportive and happy. My friends loved watching me with my last girlfriend because we were embarrassingly lovey dovey in public places compared to other people lol. But I have had girls basically admit they are fine for dating and having fun with a black person but would never marry, and others who don't care (least they are honest so I don't waste my time) but yeah interracial dating can be a pain. Just all about doing your thing and everyone else can go be a dick alone somewhere else!
Let's not even get into the shit you get from people of your own race >.>