I unsuccessfully found a cite to confirm this, but here’s someone asking if this were indeed possible:
How would exotic matter interact with itself gravitationally? I assume they’d repel each other gravitationally because three negatives makes a negative again? How about electrically? Would opposites charges repel and likes attract because there isn’t a mass component in the force, only in the acceleration?
Assuming that by “repel”, you mean “accelerate away from each other”, and by “attract”, you mean “accelerate towards each other”, then yes on all counts.