Still have feelings for my ex

So me and my ex mutually split the second week of uni, because he decided he liked me more as a friend. We're still extremely close and tell each other everything p much. So recently he's told me he's had trouble finding girls to talk to because he thinks no one is into him. Except I still like him a ton, and I hate seeing him be so hard on himself. Should I tell him I still have feelings and I want a second shot at a relationship, or not tell him at all?