just because
adv1
Used to show that the truth or existence of one thing does not logically justify the truth or existence of another thing.
- Just because he didn't accept your friend request (it) doesn't mean he has forgotten you nor does it imply that he no longer wants to be friends with you.
2
Used to say that something has insufficient grounds for being done.
- [My banishment was p]etty spite on the part of the Lord President, just because they [my lab mice] et his cat.1985 February 9, Pip and Jane Baker, The Mark of the Rani episode 2, spoken by the Rani:
3
For no particular reason.