Caring vs. giving space
By ISFJ's fifth "did you eat?", ISTP's phone is still sitting in the car.
They'll see this match write-up. Your test answers stay with you.
These two
ISFJ × ISTPFor ISFJ, love means looking after someone; for ISTP, respect means leaving them be. So ISFJ's frequent check-ins feel a bit heavy to ISTP, and ISTP's silence feels hurtful to ISFJ. Day to day, though, you work well together — ISTP fixes what breaks, ISFJ keeps the home running — and before long you'd genuinely miss each other.
To make it lastAgree together on how often to text. Less guessing, less hurt.
Each on their own
You love by anticipating what your partner needs before they ask. You do hope it gets noticed, though, and being taken for granted wears you down quietly.
The Quiet FixerYou show love by doing — fixing things, picking up what's needed — but rarely say it first. You last longest with someone who respects your alone time.