his ex 🙄🙄

My boyfriends ex always tries to contact him. Eventually at one point she called him 50x while he was at work and had to block her. She comments on almost every post he makes on Facebook and it is getting under my skin. He always reassures me that he doesn't care about her and I shouldn't worry and I do trust him (Also since she lives like three hours away) but I am getting really annoyed at her. Should i do anything?