My experience with ISFPs has been cat & mouse or hot & cold stuff. Most ISFPs from my experience maintain high personal boundaries when they are on the fence. But they will still come out and play, out of the blue. At least the ones I have dealt with love to be chased. But only a little. Then when you move on because they appear either not or mildly interested, they pop up outta no where again
I have an ISFP friend who I am very close with but not in a talk everyday way. I will hit her up random scattered not all congested, she can be lost in whatever she is doing for months. Then outta no where appear and genuinely just be engaged and warm and involved. I know her social battery runs lower and she just tunes things out, then sometimes feels bad, then all of a sudden appears. I know she is just doing whatever.
I have an ISFP friend who I am very close with but not in a talk everyday way. I will hit her up random scattered not all congested, she can be lost in whatever she is doing for months. Then outta no where appear and genuinely just be engaged and warm and involved. I know her social battery runs lower and she just tunes things out, then sometimes feels bad, then all of a sudden appears. I know she is just doing whatever.