5. That you have nerdy hobbies, like cosplay or model trains.
If your hobbies clash with your boyfriend’s, they could do your relationship in when he finds out what they are. One sad comment reads, “I didn’t want to keep it a secret, so I told him that I was into anime. He dumped me a week later.” Of course, there’s nothing wrong with being a nerd and your boyfriend might actually prefer it if you are. Still, be prepared for the worst if your hobbies aren’t exactly mainstream.