Icare, I too have a S who gives me mixed signals. I've learned not to take them too too seriously. I think it's more a sign of how confused they actually are. The coin can land anywhere - when it finally does.
the best thing to do is to Get on with your life as best you can. there will be moments/days of longing and sadness - believe you me I know - but it gets bearable eventually.
I am so glad I just got on with my life, and am creating something for myself. My H is still dilly-dallying - I'd be a total basket case if I waited around for him. I still don't know what he wants - he doesn't know what he wants.
So while they are trying to figure themselves out, take care of yourself.
I don't email or text him - unless he's asked me something. So it's more like I simply respond. I have tried to minimise pursuit as much as I can - it is not easy.