In today's environment what kind of expectations do you have or how do you proceed with a new prospective dating person?

I ask, because I just separated from a long term 'friendship' on New Years Day, after finding that I had simply 'put up with, behavior from her that I found unacceptable almost from day one but did so because we DID ENJOY many of the same things. i. e., travel, dining, concerts, beach walks, and many other things. Problem is she has money, and simply refuses, or (maybe doesn't know how) to dress for certain events.

Over the time we have 'gone out" we have slept together ONE time, and that left me feeling 'left out" as she is very 'selfish' in bed. That was a big RED sign for me, but I chose to ignore it. in lieu of the other positive things we shared.

The coup de grace, was New Years, and we went to a concert at Segerstrom Center for Performing Arts. (This has happened many times, at similar events) She came dressed like a homeless person and I was really embarrassed as I did dress 'down" for her sake but did wear dress shoes, Levis, Cashmere sweater, scarf and black leather coat.

This may sound "trivial' to many readings it, but there are/were other issues involving our intimacy. We met as 'work associates" and just continued from there, and at work, she dressed in a very unconventional manner. Friends there 'warned' me and I chose to ignore it.

She has $$$ and lives in a two-story home on a golf course in Oceanside.

In my position, how would you proceed if you were me, as it is a weird feeling at this point.

I am not adverse to being alone and have a full life, other than the 'dress' problem, we had other issues to confront, which I will not elaborate on here.

Do you have 'expectations from your dating partner or PROSPECTIVE PARTNERS? I would appreciate serious suggestions, Please.

Updates
1 y
As an addendum, I want to add that my 'friend' could be very helpful and DID a lot of nice things, during our tenure, and could be very helpful/thoughtful, in many ways. I just feel that her lack of "social graces" and ineptitude, in dress, for special occasions, was an overriding concern for me, and have felt, that I may be appearing 'shallow' in this instance.
In today's environment what kind of expectations do you have or how do you proceed with a new prospective dating person?
Post Opinion