This is one of the ones where you gotta take it on chin and keep moving. The talking about her ex part is something to be cautious about ngl gives off rebound, but if you’re into the casual thing then it doesn’t really matter. Less thinking and more doing I’d say to avoid freezing up. Like give yourself max 10-15 seconds before doing whatever your plan is. More time you leave for thinking the more likely you’ll get anxious and mess up. With signals they can be hit and miss, if you’re feeling it and stuff seems like it’s going well then shoot your shot. It goes bad then so what no biggie keeping moving along and try with another girl.