Here are some dating rules that all confident girls should ignore. Hell My flatmate is always shocked if I text a guy after a first date saying I had a nice time, and a bit of perspective and you'll always be better in the long run. 48 hrs?] after which I should just assume he's not interested? I've been told I shouldn't text /call a guy after a first date because 1) it looks. What starts off as a text may then lead to one of you calling the other person up the same night and having a long romantic late night conversation, and even a.