I can see those stereotype applying in a lot of situations. It makes me wonder, looking at them, how does the prospect for reproduction play into it. At a high

I can see those stereotype applying in a lot of situations. It makes me wonder, looking at them, how does the prospect for reproduction play into it. At a high level, one big difference is that straight couples can reproduce together. So its not merely looking for a partner in life, or a partner to help raise a child with. But for the prospect of merging your genes. I think nowadays a lot of the behavior could be explained by values lingering. But I can also rationalize how in a more natural order, without contraception existing, the decision for two straight people to get together comes with a much higher risk/reward ratio. From this, entails that picking the best partner is much more important, and making sure they'll remain throughout the whole pragnency and afterwards to help and support, etc. All that seems to weigh on the decisions for two people to partner up in a straight relationship that doesn't seem as likely in a gay one. Maybe those instincts remains in straight people, even though nowadays we have good contraception. Or maybe it's that values of such time still linger. Also, even with contraception, it be pretty weird for a straight couple to decide to find a suitable surrogate, so there's still that ultimate, would this be the genetic other of my child?