Should I tell her?

So my friend Annie has literally been in love w this guy forever. They have A TON if history. He was her first love and she was his. They still talk, but not the same. She talks about him all the time, but she’s getting over him with another guy. Her best friend (one of my good friends), got the guy to send her nudes and told me that he asked to hookup w her. This could sound totally dumb, but should I tell annie? Her friend literally knew about Annie and his’ history but she deliberately did it.