Especially when the worst that could happen is nothing which is exactly what's going to happen if OP says no. Literally can't go backwards no matter what, but it's possible they could go forward.
Well...unless something psycho happens, I guess. Then OP will suffer greatly, go very backward, traumatised for life etc. etc. etc...
Nah, they'll be fiiiine.

When opportunity presents itself, say yes
save