My partner complemented my sister and it made me upset, was I being irrational?

He knows what kind of relationship I have with my, me and my sister don't exactly have an open relationship with eachother and we are quite different and don't see eachother eye to eye very well but we keep our relationship on balance as much as we can.

So my partner complemented my sister saying she is the strongest and has great skills in speaking. As for me I'm the very opposite of her and he rarely complements anything that's true about me. He never talked about my traits or qualities that I have. I feel like maybe he crushes on her and it made me feel extremely upset.

I have talked to him how I felt about him but he doesn't seem as interested or intrigued as he is by my sister.

I just told him not to speak to me for a while so I can feel a little better about myself. He said he doesn't understand but I feel like he actually does.

Breaking up is one thing but I don't want to seem so irrational.

My partner complemented my sister and it made me upset, was I being irrational?
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