Should I ask my boyfriend to delete his ex's pictures on fb?

[type o negative]

Talk to him about it, but remember again that you shouldn't feel as though that's something you should necessarily have to ask him to do. If he was truly over her, he would've gone through the steps in the process (deleting the pictures) to get to that point. It sounds like he was in a bad unhealthy relationship but make sure you also aren't the rebound.

Don't forget this though, it's a red flag.