ED SHEERAN can't look at Twitter anymore, and LADY GAGA's fans might be to blame. In an interview the other day, he said, quote, "I go on it and there's nothing but people saying mean things. One comment ruins your day." What happened was, Gaga's fans heard something Sheeran had said earlier this year, and they thought it was an attack on her. So they've been bullying him ever since. But he SWEARS he wasn't talking about her.