Pathetically possessive of someone, usually a significant other.(adjective)
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Use "clingy" in a sentence
"I would love to wear more dresses and skirts because you are right about T-shirts and jeans, but the skirts are too short and are meant to be worn bare-legged and the dresses are halter or strapless or made of thin clingy material, etc."
"I think many women have become wary of seeming to want or need a man for fear of appearing 'clingy' or weak."
"I really don't want Moffat to write Rose because he doesn't like her and I can see him writing her as a "clingy" ex-girlfriend if he felt forced to tie up the Doctor/Rose story."