Is it bad that I still talk to my ex ?

So me and my boyfriend of 1 year recently broke up. He said he wanted to take a break and focus on himself. But I know he still loves me and we said we’ll get back together like when we’re ready but we still talk to each other daily and I still have all of his things like his jackets, our photos etc. but my friends think it’s bad that I still talk to him and I just don’t know if talking to him still is a good thing. So is it bad that we still talk ? Also he got mad that I didn’t say hi to him and that I don’t really show any effort and I know I should but I just don’t really know how to show affection or like effort so I need help with that too.