i'm speaking from my autistic experience of being in a healthy, long-term romantic relationship with an allistic person, but this really goes for any kind of relationship
sit down with your loved one(s) and discuss how you specifically process language and what your needs are when it comes to be communicated with
a few years ago, my fiancee and i would butt heads over mutual misunderstandings all the time. turns out, a LOT of those misunderstandings were just us having different definitions, usage, or connotations associated with different words/phrases
for example, my fiancee thought she was inviting me to do things just by mentioning that she Wanted to do an activity (e.g. "man, i could really go for some pizza right now")
i thought she was just being literal (e.g. "oh, well if you want pizza then you should get it!")
she thought i was constantly rejecting her invitations, and i thought she was never inviting me to things. in reality, we both just flew by one another because we didn't realize that we saw the same words as meaning different things
most people take their own interpretation of words/phrases for granted, and assume that everyone already agrees on what they mean. but people DO have different interpretations of words for a variety of reasons (neurodivergence, language barriers, class difference, etc.)
so like,,,, if you care for someone and they care for you,,,,,,,, talk about it! i ask my fiancee about different idioms and phrases all the time, and she'll frequently ask me "when i said X, what did you think i meant?" and such
and when you catch those differences, you can work toward mutual understanding and come up with solutions together
best of luck, my friends!