Body builder do you live where there is a lot of tall people. Because hear in San Francisco I see a lot of couples that are of the same height and that 5 inch difference you say is when the gym is abnormally tall 6 3+. Of course for the most part a 5 10 guy is not gonna feel short but I have seen plenty of couples where there the same height.
In my country the official average height of men is 1.78,5 which is about 5.10,5.
But it is not only that men are relatively tall, it is that women really seek for tall men here, even the short ones, and they give the most importance to that.
Trust me, when I say that most couples have a great height difference if the woman is average-short and this difference is only smaller when women are tall too (5.9 and more) I know what I'm saying.
A 5.9 man here isn't consider enough tall for the strong majority of women here, although for a lot of them it is not a reason for rejection. But even the ones that don't reject you for that, they still feel that you are not tall enough and if you are not the ideal man in every other aspect they tend to disrespect you for that and do jokes about it. And it is comoletely insane to disrespect anyone for his height, moreover if he crushed his legs and reached a very normal and respectable imo height like 5.9 which is about average.
But it is still not enough for what society taught women about how an attractive man should look.
And trust me, almost all the women give much significance to the opinion of their lady friends and when they are with a not tall man they know that most of their friends will see him as someone not attractive enough and subconsciounsly they start to see drawbacks to him too.
But that's women and unfortunately with this situation we have to deal.
I'm sick of tired with all of ithese and I really want do do a second and successful LL to get rid of all of this nonsense that makes our lifes worse without any real reason.