Okay so that might be too broad but this recently happend with a housemate and its made me think about other times in the past, my housemate (f) and myself (m) had been on and off fooling around together for the last8 months, things with that have been fine and not uncomfortable in the least bit. So the other night, she came home very much drunk. After making eyes at me and making a comment thay very unsubtly suggest she wanted to have sex I declined because of the state she was in, she kind of pulled back and said "oh no, I was just messing around but! I did want to talk to you about making things platonic moving forward" I said I was cool with that and if she wanted to talk about it at greater length I would love to do so the next day. She asked me why not now? to which I replied I didn't feel comfortable discussing that because she had been drinking. She insisted we do because she wasn't THAT drunk. (When she walked in I stepped out for a cigarette, when I came back she was rolling around on the floor giggling) we can chat now. It wasn't going to be emotional or anything, and after a few good minutes of her insisting and my asking to talk about it tomorrow I finally had said I had to go to bed which she accepted (we both wake up before 5 am and it was already 9pm). Which got me thinking of other times partners have wanted to have serious important talks. And either because one or both of us were drunk, already emotional at the moment or I didn't have the spoons, why would insist we have the conversation and would feel offended at my reasons/assertions. What are some better ways to approach this kind of situation in the future, what are some less offensive ways of asking and explaining why I'd like to discuss it later?

Tl;Dr when someone wants to have an important conversation, but you want to discuss it later when they/you are sober or more clear headed but they're offended by that and insistant. On talking that moment. What can I do to better navigate the situation?