Advice on a nameless faceless sp

So this might seem weird or chronically online but I think I’m starting to catch feelings for my sp, I haven’t even seen his face or know his name I just know a nickname for him, let’s call him “D” So me and D have talked otp a few times and chatted in DM’s and in a chat but I feel like it’s going nowhere I don’t know how to approach or let him know and I don’t want to either since I do not want to ruin what we are building, it’s hard to deal with this, I’ve tried manifesting but I see no outcome, it’s the same, any advice?