Why do a lot of couples look like they're related?

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It plays a part in the attraction process, to anthropomorphize:
"XYZ genotype has survived this long, must be good fer sumthin'."


More obviously, it can be resultant of environment:
LT couples often live together, eat the same foods, are exposed to the same stressors, etc.

Ah, gotcha. Bf has this book on loan from his library about the genetics of red hair- apparently there are two genotypal variations, one involving having two copies of the necessary pigmentary gene, the other, just one. I say this because I've always wondered why so many gingers have light eyes (like Ron's), whereas mine are dark.

This seems to be true of me. I don't think any of my ex's look like me but i have been asked in every one of m y relationships if we were brother and sister.....and one case father and daughter.

I date men of differant backgrounds with very differant charactoristics but even i can see that if i was to line them up they could all pass for family. I think is is body type i go for with all my ex's and my current partner all being very broad shouldered, small hips, tall, hairy. Also all my ex's have a softer face with giant nose and large lips. They are also all very very white, even my ex who was maori.

This has always worried me because I am adopted and I have no memory of the appearance of any my biological family. All my exes were similar in appearance. This is worry for me is that a such a thing called Genetic sexual attraction and it's possible that I am attracted to girls who look like my mother.

The other worry is that my exes have relatives that have strong connections to same part of Ireland that my biological parents are from.... so there's a TINY chance I was related to an ex. Of course, this is nearly impossible but the worrying thing is almost as impossible to know for certain.

On a related note, it seems to me that most people will only date within their ethnicity.

Friends also are also like birds of a feather
who fluck together

personally though, I'm searching for someone just like my mother

I wonder if melting pots like NYC are some sort of anthropological evolutionary step away from primordial functions

Even while I'm posting on WP, I feel an attraction to certain posters, those who reflect my **textual** image.... like Narcissis watching his reflection in a pond

The pond being the screen, and the image being rhetoric

Sometimes though, couples make me want to vomit, especially the on line ones living a virtual cybersex nightmare

I read that married people develop similar mannerisms and customs from living together for a long time. That might help in making them look similar.

They wear matching sweaters