Friend said she doesn't want me to find a "better" boyfriend than she has?

She confessed to me drunk the other day that she "never wants me to find a boyfriend hotter than the one she has." She literally outright said it, she doesn't want me to go out with guys she sees as better. Is she toxic? Is this something I should let slide?

Friend said she doesn't want me to find a "better" boyfriend than she has?
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