What is the connotation for gay蜜? Is the connotation literally that the two guys that it refers to are gay, or is it like the english 'man-date' where it is just two close friends going to do something together.
Same question for 闺蜜.
Is this usually used for young adults (18-30 years old)?
The usage is varied and depends on the scenarios so there's no strict definition. But generally,
gay蜜 originally means a close gay friend of a girl, now it's applied to the non-gay group. Again it's not safe to say "A is a gay蜜 of B" unless you are close to A or B. Sometimes it's rude but it's ok to use this word safely within your friend circle.
闺蜜 mean a close female friend of a girl. This word could track back a long time ago. gay蜜 and 男闺蜜 are originated from this word.
闺蜜 are used at all ages. gay蜜 are used by adult(born after 1980s)
gay蜜 is not a formal word, usually used on Internet or in oral languages by the young.
When a girl has a gay male close friend, she will call him "gay蜜".
e.g. "他是我的gay蜜。" means he's my close friend and he's gay.
Is "gay蜜""闺蜜" usually used for young adults (18-30 years old)? Yes.
Where did you get the meaning of gay for 蜜? I have never heard that!
蜜 is honey, but you wouldn't call your gf 蜜 like we might in English. That would be 亲爱的， 宝宝。
闺蜜 is a woman's best friend, not a lesbian.
男闺蜜 could maybe refer to an unmanly man, possibly gay.
基佬 is slang for a gay guy.
Two men who are friends might refer to each other with 兄弟 or 铁哥们。
