While men may be attracted at first to the package, they look for much more than that just like you do. Lifelong partnership is in no way about maintaining the fabulous outside. You will look after each other when you have noro and flu, hear each other fart, share a bathroom, see each other first thing in the morning.
I am in no way well turned out, was behind the door when they were handing out chic or even smart, but i find it helpful in looking "okay" with minimum effort to have a uniform consisting of a limited colour palette in the colours that suit me and go together, pull together neutrals, and shoes that go with. I don't wear makeup and my hair is cut in an easy care style.
An example is that I have one style of everyday jeans/trousers that suit me (M and S jeggings) I never wear skirts or dresses but the same principle applies. I have them in denim for everyday, grey and black and a range of brighter colours. I have grey, purple, red and turquoise sweatshirts so even at my most casual the colours go and I look tidy. To posh up I have scoop neck tops and shirts in soft toning colours. For really posh I have black and navy velvet jeggings with black suede chelsea boots.
This is probably not your style at all but do you get the idea? No brains mix and match and ONLY the colours and styles that suit you 100%. You can pick out what to wear in seconds and KNOW that you look good.