Asking my ex to be my boyfriend…

The backstory really isn’t relevant. We dated 7 years ago, we went through a huge tragic life change which essentially was our demise. We’ve been friends ever since. We transitioned into fwb and few months ago, and honestly I feel like after we matured we’d be a good fit. He asked me last time, so i wanna ask him this time… on the 7 year anniversary of us breaking up. The worst he can say is no, and then we’ll just continue our regular scheduled programming.