I'm with KMMK. Attraction shows me that something is missing in a relationship.
No. Thats plainly wrong (except you mean you are lacking a second man).
Regardless if you subscribe to the 1 soulmate thinking (good luck finding that one in 7 billion people where you weill never meet 99% of them) or not, there can always people who give you different kinds of affection and attraction.
There is
no one who can give all that, that others can give you. Others can enrich you in numerous different ways and you can feel in numerous different ways for that.
"missing" is NOT the same as "you could have more". Its hard to explain...
Since I am an anime fan let me explain this with anime girls ^^
This is Tohko, the Book Girl. The loves books so much that she eats them.
If I would meet her, I would be delighted (as the bibliophile that I am) to listen to her talking about books. I would probably look like the cheshire cat. I could watch her for hours when she sits on the folding chair reading a book.
But this is completely platonic, no sexual attraction (and that has nothing to with the fact - and I half quote the book here - that she is so flat you wouldn't see more even if she strips completely. As a writer myself I love that line.)
Then lets look at the opposite. Hm... Hestia.
This little goddess with the big curves, if she would does the skinship she does with her boy I'm not sure if I could resist. But I would have problems with her even as a normal friend. Too noisy for my liking.
Another one, one of my favorite chars: Shinigami Rory
This gothloli semi-goddess is incredibly funny (of a certain sadistic sort of fun
https://www.youtube.com/watch?v=Wf6JNYHEp6Q ). Also if she would seduce me, I would not say no - but I would have no problems at all without any sexual tones. She is just funny to have around and sex would just be one more sort of fun.
So, what do we miss... ah, the waifu material: Hiro
This always dieting girl looks good, is warm, intelligent and a good cook etc. The motherly stereotype.
You could have a happy marriage (as with the others) and not miss anything.
BUT you would never have the same fun as with Rory or the intense love for books as with Tohko or the noisiness as with Hestia.
That is what I mean with the difference of missing and more.
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Back to the OP:
Of course it can be that you miss something - whatever it may be. You have to find out by looking into yourself, which is hard. Thats the core of my first post.