Was my friend raped?

Hello! I have this friend who has been claiming she has been raped by her ex for over 2 years now. I personally know the guy and know her. Her story was always that they had both agreed to finally have sex (it was her first time) he asked her if she was okay and sure before starting and she agreed. Once it happened it hurt her but she didn’t really say anything. Since that day she decided to consider it rape. She made him feel horrible about it after and said he was disgusting for not realizing it was hurting her even tho she never told him or gave him any type of clue. They kept dating and she broke up with him over an Instagram post. They were on and off and she would still decide to sleep with him. Once they were really done and he got a new girlfriend she decided to tell everyone she could that she had been raped by him. I know her and I know she really loves attention so I’m not sure that this is really rape. The guy has always been a respectful male from my perspective.