Don’t call someone cutie, sweetie, babe, honey, etc. when you have never met them. The few people who might be okay with this are vastly outnumbered by the number of people who don’t like it. Just don’t risk it.
This shouldn’t even need to be said. But there shouldn’t be any sexual messages exchanged before a first meeting. Even if someone states in their bio that they aren’t looking for anything serious, or that they are interested in kink, or anything of that nature, they still deserve some respect and to be treated like a human. There is no need to get sexual within the first few messages.
If someone reaches out, and you are interested in talking to them, talk to them! Be happy you got a unique opener and try to send them something unique in response, or at least ask them something about their profile.