what kind of flirting do later twenty's women like?

It seems like later twenty's women have a special type of bitch shield up for anyone. It's like they don't even want to be flirted with, or rather, everything that would work on a early twenty's woman doesn't work on a later twenty's woman.

Is this just me needing to raise my smv to reset them back to the early twenty's mindset, or do women just become inherently less and less romantic/playful as time goes on?

The answer is probably both, but I figured I'd see what others have experienced

edit: for an example, something flirty that usually elicits a shit test from an early twenties woman will get a neutral reaction from a late twenties woman. If that's the case, then how the fuck do you get an emotional reaction out of these older women consistently?