Should Exes stay at your friends of opposite sex?

My boyfriend and i broke up after 10 years. He is now staying at different female friends of mine that he met through me? They all claim he is his friend too but i feel they are crossing the line by him being there to where im uncomfortable to be around their houses. Am i being immature or are they all being disrespectful. Also he is suddenly hanging out with friends of mine that he always hated. Whats up with that?
Should Exes stay at your friends of opposite sex?
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