So it's been annoying me that when I text something to my SB her response is delayed or non existent. She feels cold and aloof.  But when we get together which is bi weekly she can't more affectionate.  It's like jackelle and hyde.  I don't get it.

I guess I've been lucky in that my SBs have all been affectionate via text as well as irl.  We don't text frequently, that's part of the agreement, to NOT blowup each other's phones.  But when we do there's lot of "miss you daddy" , "luv u" and heart emojis.  It's nice and it's reassuring.  Maybe you could tal;k to her about it, see what she says.

I did but I just think she is that type of person.  She just does not like to text much. I will bring it up again.

When you are not together, she has her life.  She's not your girlfriend.  But when you are together she sets that time to be all about you and her.  Where you get to share that time and no one else matters.

If you want the communication between dates, tell her that.  And tell her if she wants the consistency she's already enjoying this will make you more likely to be with her long term.  She sounds like she wants stability which you provide.  Biweekly dates with an allowance.  Let it comfort her that you want it from her too and this is all she has to do to get it.

Wish I could offer a definitive answer, but honestly if anyone would make a list of five strange SB behaviors, this would be high on the list.

believe, it or not, are not constantly plugged in to their devices, and still use technology like people used to use it in the 90s.  Or she just wants to compartmentalize and keep her warm and fuzzy side for actual meet ups. If you ask me to wager money, i am more willing to go w/ the latter.