I'm a fan of this mindset, because the reason Christine and I are dating is because she gave a nudge. ;)

This is all the more relevant for me because I prefer to let things flow as they will, rather than concretely asking a girl out. It feels more natural, it doesn't put anyone on the spot, and thus it seems more likely to work out if things do come to pass. Also, it means I don't have to work up the nerve to do any asking until things are already going well. ;)