It's hard to accept morally but Ian helping the Anatold family financially basically means he bought Michele from them. Yes they literally sold him out fully aware of the implications, which gives Ian the feeling that Michele is his and that he can do whatever he wants with him, sucking him off while he's drugged, even if it's 100% assault, is one of the least problematic things he could do to him.
It's hard to accept morally but Ian helping the Anatold family financially basically means he bought Michele from them. Yes they literally sold him out fully aware of the implications, which gives Ian the feeling that Michele is his and that he can do whatever he wants with him, sucking him off while he's drugged, even if it's 100% assault, is one of the least problematic things he could do to him.