Re: Post-number close sticking point
More likely than not this is text problem from the sounds of things (or you're leaving the interaction at a weird time).
I always text a girl immediately after I head home for the night if I'm interested. Usually that text will include a nickname that's an inside joke from our conversation and something cocky/funny. Doing this does several things: (1) it cements the interaction you had with her by giving her something tangible from that interaction; (2) it tells her that you were listening because you bring up something said in the conversation; (3) tells her you're high value because you're sending something funny and enjoyable, not needy; (4) it tells her that you're not some chump who follows a silly three day rule or whatever; and (5) it shows interest after a major disqualifier (walking away from the HB in the first place is the disqualifier).
Check out T-Mal's texting guide for general texting advice.
"It's only after we've lost everything that we're free to do anything."