Fwb and bringing up feelingd

I’m preparing to talk to my fwb ab how I caught feeling and want a relationship.

I think I’m either going to to this the next time we hang or the time after to really feel out everything.

Even if he doesn’t like me I have to stop this it’s causing me so much damage.

But how should I go about this? How should I phrase it? It’s a bit of a drive to his so should I do it just before I leave , or when I get there? Should I withhold sex before telling him? Or have sex then bring it up? At night? In the morning? During the day??? Maybe it won’t even matter cuz the answer will probably be a no to a relationship anyway. Ik he said he wasn’t ready but that was almost 4 months ago and one time recently he kinda hinted to me being his gf eventually.... idk maybe it was a mistake on his part and he regrets it. No idea.

But I can’t wait for him to say anything. God I’m so nervous and I don’t want to cry in front of him.

Anyway how should I word this??? Anyone have any experience in doing this w a fwb??