To be straigt forward... How you contact a girl after sex on the first date?

This girl and I met one time trough a mutual friend, due to conflicting work schedules all we could do was text/ phone calls/ fb for about two weeks. Once we finally had some coordinating days off we enjoyed each other in every way or 3 days straight. Literally a sex fest at my apartment for 3 days straight.

I really enjoyed myself, and want it to happen again. Over the last week texting has just caused drama and problems, and I've been threatened with "you better not make me upset" lol. That's the last text I've recieved due to me going out last night while se worked.