i disagree with the heart to heart. relationship talk rarely leads to action. I would go for non-stop flirting and pursuing. No need to test the water assume it is hot.
"but then when night rolls around, she falls asleep on the couch and isn't as responsive."
remember when you were young, really young lola and there was a girl you wanted and you would chase and pursue and get nothing. spend your entire paycheck, drive 25 mile each way and if you were lucky get to put your hand up her shirt. it was the pursuit that drove you and weakened her. same story fast forward 20 -30 years.