Here's my 2 cents. I'm with
@sazc on this one. The GF asking why she is having to do the majority of the initiating is not a red flag. It's her way of evaluating whether or not OP is worth HER time.
In my relationship I never text "good morning" and all that. I expect a man to initiate and demonstrate interest through action. My job is to respond. When a woman pre-empts the man by initiating she looses the ability to discern his interest by observing his actions because she is doing the man's job (initiate).
When this happens you eventually get these type questions because the woman starts to wonder if the man has any investment in her because she has removed her only ability to watch what the guy does. So you get this kind of question, which will then (if she isn't reassured) be followed by withdrawal so she can start observing the man's behavior.
I don't have this problem. I never initiate; I always respond.
As far as OP goes, it really comes down to what it is the OP wants. If he just wants serial dating and plate spinning then the advice from the men above applies.
If however the OP would rather have an LTR and develop depth on a deeper level, then at some point he's going to have to invest emotionally in someone.
Some of the advice in this thread is geared toward protecting OP from emotional attachment. In LTR game this is bad advice because it actually deprives OP of the depth required to develop something meaningful, and there are older women with options on the market. I am such a woman & so is
@sazc.
My advice to OP is continue to be warm & loving when you are together and my suggestion is to assume more the man's role of leadership in the relationship (aka initiate contact.) This will accomplish 2 things. It will give the GF the reassurance she is seeking through action...and it will also allow OP to frame the contact and drive it.
I'm NOT saying OP should text more because she says so...
rather I'm suggesting this is an opportunity to assume a more masculine leadership role and at the same time reassure her and build her respect for you.
But that is only if OP values this woman and wants a LTR. If he wants various plates then the advice already given by the men here is the correct advice.
Good women don't stick around if they feel stonewalled any more than good men do.
What do you want OP?