I’m in a relationship where the other person is really really frustrating me by always being inconsiderate and never putting any effort in to show me she cares at all about me.

I’ve tried numerous times to talk to her like mature adults and let her know how I feel but she really doesn’t seem to care

When I think about it I get so frustrated I actually tear up. And I think, should I show her this? Then she’ll finally realize how serious I am?? But then I also worry would IBTA for emotional manipulation?