MY X's CURRENT GIRL

sunny
My last ex was my first true love. When he broke up with me (to date someone else) I went through major depression, and I was SURE I would never get over him. It's been about 2 years sense the break up and I have a wonderful man now. but I recently found my ex's current girlfriend on social media and I've been looking through her stuff ? I got sad at some pictures regarding the two of them, and felt bad for her in other tweets because he was mentally abusive and I believe she is experiencing that now. I'm so confused by this, she seems so sweet and someone I would be friends with. Should I leave it alone, or should I speak up? ?