We should all have our own personalised set of 'boundaries' that are very clear, right from the very beginning of any relationship, not only to ourselves but also to our partners.
To quote the lovely Dr Phil

"Once your partner engages in any kind of behaviour that you have described to them as being part of your list of 'dealbreakers' you hold your head up, turn around and walk away - cause You are worth More than that.
Now ladies I'm not talking about when he leaves the toilet seat up etc etc
And gentlemen when she nearly suffocates you with perfume fumes whilst she's getting ready, deal with it
I'm talking about Real issues, things that hurt, things that would change the way you look at yourself, your partner And your relationship...
To name but a few of mine: Abuse - be it in any way emotional or physical, cheating - in ANY form (cause how convenient has it not become to go 'oh but it was only an online flirtation it didn't mean anything')

Passivity - I like life in the dynamic world and if things need doing I want a partner that would be willing to roll up his sleeves and get with the program, not sulk and wait for someone else to come do whatever For us

Lack of Any type of hygiene
...and so I could carry on
I find that most people cant answer immediately when asked what exactly it is they crave and expect from a partner

That is very very problematic seeing as everyone knows exactly what it is they Don't want.
When I'm single I spend my time On myself not neccesarily By myself, I try and think about who I want to be when the man of my dreams meets me and then I work towards that
You can be who and whatever you Want to be - Be all that. When someone comes along that ticks all your boxes, be proud of who you are and don't settle for anything less than you need.
If you've set up your own structure Before he or she comes along you'd know what to do in the event of any type of dealbreaker situation...
And hunter... trust is earned not demandable, if she was / is worth your trust, she will know that