Hey you'll find that English girls are much more suspicious of openers, routines and some kino. Using something like an opinion opener is more likely to crash and burn. Opening them needs to be more situational, make an observation
I've had a nightmare trying out things like the cube or other routines on them. That stuff has rarely worked and if it has its because I've come across as a fun person beforehand. The 5 questions game by style works pretty well.
Use disqualifiers and role reversal questions such as "are you trying to make this sexual? is that all you girls think of?" to make it seem like they're flirting with you, this has worked especially well at uni so far.
I usually go light on the kino until isolation, unless the set has responded well to a test in which case go nuts
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Hope this helps I've only ever sarged in the UK so can't offer much in terms of comparisons, but this is what I've learnt thus far. I'd be interested to see what others say
R&B