The Intuition part

I think there's some underlying stuff making your question feel more powerful to you than it might to the casual reader (i.e. the "being in love" sub-topic).

I don't really feel resentful if I outwardly express my intuition and either have it dismissed or if it isn't openly acknowledged as being valid. If it's a situation and I'm in a group (i.e. I don't like the feel of this club or party, let's leave and go somewhere else) and it's dismissed, I'll weigh whether the feeling is strong enough for me to act on independently (split with the group) or deal with it and continue on.

Perhaps the key might be to begin thinking of your intuition as a personal voice rather than a public alarm system, and phrasing your cautions in a more personal way like "I don't feel comfortable doing such and such" rather than "Don't do such and such, it's dangerous (or something will go wrong, or whatever)."

Hope my reply was on target for your situation

 

It is a very tricky thing but I'm with Zen on thinking it's more of a personal voice. For the longest time I felt a heavy responsibility to voice what I 'knew' and time and time again it would land me into hot water.
Now I bite my tongue more often and just let people learn things on their own through experience. If my intuition is ringing danger bells or fear is strong I act on it no matter what the consequence.
The main problem I have with all of this holding in things is that it seems to fester beneath the surface and then once in a while I blow my top.
A non verbal release of all this stuff should be an ongoing thing with us or the weight of it all makes us sick.
Lurker was right when she reminded me that writing is an excellent release. Even if you can't say what you want to you can at least write it out.

 

Also, it's not about what you say, but how you say it. For instance, I could tell my dad flat out that he's wrong and then start trying to correct him, which would piss him off. ...or I could calmly point out his error and explain to him why it's an error and what I think should happen.

So, I think if you said it in a nice, endearing way, then they would listen. Personally, I'd sit down with whomever in private and say, "Hey, when I talk with him, I feel like this, and this feeling comes from his incessant double dipping."

However, if you have done that, and they continue to not listen...well...um...

 

haha...I'm still trying to find a better avatar