Typical situation in the dating world - you generated lets say 30 leads to some dating website, but 0 sales so far. No one is interested in those people, so they dont have a reason to pay for subscription. Obviously.
What to do with it? We do create fake profiles, write to those leads and pretend to be someone that is actually interested in them. That is possible only because we know the IDs/usernames of those profiles from the aff console. This method brought some sales finally, we got our XXX daily revenue share and everyone is happy (well...). Sounds like monkey job, but no-one says you personally have to do it ;-).
Anyway, I feel we have a huge space for improvement in this and I am sure someone is doing/did the same or simmilar thing in the past. And after all there are so many creative people that someone might have a good comment in mind just by chance. As its basically sales after all, right? :-))
So my question is obvious - can you share what works best for you? Or what do you think it might work? There are so many "stinky" pick-up lines offered around from various "how to tinder" articles, but they dont usually work (even the ones that looks super clever - they look fishy or stupid for "normal" people).
What worked for us so far:
So is this gonna be a first message? Or profile tagline?
Is this for sites like date.com etc?Basically safe sites.
I know for sure that there are companies that offer this as a service ... so they create some accounts and simulate activity by contacting members. So it's not just chatbots, but real people doing the work. I've seen someone advertising a service like this, but if only I could remember where it was 
But just to give you a few tips from my dating promotions experience...
- localized always works ... that's why your line with the coffee in "your city" worked well. Try to play more with it ... looks like we are withing driving distance... I'm in city XXX regularly, wanna meet? ... going to your city for business next month, care to have a dinner with me?
- interests ... not sure how much you know about the leads, but for example animal lovers tend to look for partners who love animals too ... I see you are breeding a golden retriever, been my favorite dog for years ... there is a cool dog bathing place in your city, let's meet there ...
- simplicity and honesty ... this works well with some people, clear short message, all cards on the table ... for example the "cut this bullshit" example you posted is a good one.
- kids or other family factors ... help them relate to the situation of the other side, plus emphasize what they have in common ... Hello, I see you have kids of the same age as mine, puberty kicking in already? ... Im a single parent just like you, would you find some coffee time before the school madness begins again ...
- religion is a big factor too
there are many more to go by, but these few should be enough to give you some food for thought 