<human>: Give me a shortened version of the text

Alright, here's the deal. I've been dating my girlfriend for about 4 months at this point. Everything is great, except for one thing: her psycho ex has been harassing her, causing scenes and talking behind her back to her friends. This has been going on for the past year or so, but lately it seems to have ceased.

When we first started dating, she asked me if the dude had tried to contact me in any way. I said no, not to my knowledge. However, as I'm currently looking for a roommate, I decided to check the "other" category of facebook messenger for responses. No roommate responses, however I saw that her ex contacted me around the time we started dating (4 months ago).

It was a passive aggressive message along the lines of "I hope it still looks like this", with three nudes attached. My first instinct is to visit this guy and break his nose, but I know that will create more problems than it will solve. Now the question is, do I tell/show the message to my girlfriend?

On the one hand, she asked me to tell her immediately if he contacted me at all. Also, if I were in her shoes, I would probably want to know about this.

On the other hand, she is finally starting to feel safe again. This has been going on for a year, and fucked up her life in major ways. I know this will be very upsetting for her. Ignorance is bliss??

Oh, not sure if this is relevant in any way, but we aren't in the US.
<bot>: Girlfriends ex has been harassing her for a year. Recently I found out he contacted me with her nudes. Should I tell her?