I'm 23 years old, not sure how old you guys are, but in my neck of the woods texting is a MAJOR part of communicating with girls. A lot of you guys seem to act like texting is only for setting up plans and it is not right to have a real convo in a text. I have a lot of girl friends who I am solely friends with that I can talk to forever but one girl (and this isn't really a one-itis type of deal and more of a general question) I text with is a little more than that. A lot of the time you guys say to just end the convo after a bit to not make it seem like you're always free and available but every time I do this after a bit of talking and I see the convo dying down I say ex; "hey, i gotta get going have a nice night. i'll talk to you later" i get a snotty attitude and she says i come off as a dick. Am I doing this right or is this girl just crazy?

This is a girl I had a history with, I'm not really trying to date her or anything but I'm more just trying to get my confidence up by having sex with her a couple more times, she's extremely good looking and would make me feel a lot more confident in pursuing girls. You guys might find this extremely hazardous to my growth of approaching girls and I can see that but to me it seems very beneficial. If you think this is a bad idea, i'd like to hear your reasons why.

edit: now that i think about it. me and her aren't really getting along to well anymore so whatever, but still it would help my shit out if you can answer these questions.