The butting-in ex

Hi ladies! So I’ve been with my current boyfriend for almost 5 months. I don’t expect perfection but he’s honestly probably the best thing that’s happened to me. We met a while after I got out of a relationship (we were engaged but my ex and I are still good friends and talk regularly), and I wasn’t worried about him being friends with his ex because stuff happens, you know? Well their stuff was they were also engaged and she cheated on him twice. Okay, maybe he’s just too nice. It happens. WELL, apparently she’s been trying to win him back even though she knows he’s with me and happy because she tried to add me on Facebook and I blocked her after finding out who she was (because no one told me, I found out after the fact). Around the time we made things official she asked him if he still had feelings for her, he said no but apparently that’s not good enough. I went through his phone (the first time I’ve ever snooped, that’s a cherry I’ll miss) and she’s been asking this question the whole time. And every single time she refers to me she always calls me “her” even though she knows my name. Did I forget to mention she’s pregnant with another man’s baby and likes to cry to my boyfriend about her problems before getting mad when he doesn’t react the way she wants him to? And she knows we’re considering living together (he’s military, I’m a civilian but we spend pretty much every possible second we can together). I’m just not sure what to do here, I love this guy but I can’t handle an ex trying to wiggle her way back into his heart. I want to tell him how I feel but I’m also friends with my ex-fiancé so I’m just worried as coming off as hypocritical even though my ex hasn’t tried to get me back, if anything he’s encouraged me to be happy and I do the same for him. Should I say something?