Everyone has their own "standards" or "must haves" list regarding choosing and staying with a mate.
Each of us also has our own "boundaries" and "deal breakers".
Anyone who doesn't probably has low self-esteem or doesn't love them self. No one should be a doormat or desperate!
If you can't live up to someone's expectations it just means you're not the "right person" for (them) and vice versa. Thankfully there are over (7 Billion) other people!