Re: Starting the sex talk by text
NOOOOOOO. It needs to be subtle, you need to infer these things "naturally" and with practice you will. I would just stay fun and flirty and let her imagination do the work. That is a question you can ask, but later after you have had sex.
Here is an example to infer sex:
Her: I do laundry on Thursdays.
Me: Oh yea, so if I drop my clothes off you will wash them for me?
Her: Yea right, I don't even like doing my own laundry
Me: It's a fair trade, I'll help you fold your underwear :P
Her: (takes a minute to respond) LMAO [at this point I know she is open to it, I was testing the waters]
Me: And leave your granny panties at home, I only want to see the sexy stuff
You have to start by using a segue, then a subtle inference and then slowly escalate, but don't get into too sexual of talk at first, you have to build into it just like turning on a woman in real life.
Telling her what you mentioned, in the way you did looks weak and frames sex as something to be ashamed of, if you want her to be open about it treat it as if it is no big deal.
I wouldn't mention sex at all, that needs to be something you ease into. Just go have fun, and make a move if your gut tells you to. If you plan your date on sex at the end you will screw the whole thing up.
KISS - Keep it Stupid Simple