You need to go in with a reasonable level of trust and increase it as you get signals of trustworthiness or roll it back when you don’t.
If you’re ruled by fear, it will be a dramatic, insecure interaction and you may end up sabotaging a potential relationship or being with someone that reflects your fears.
Also live by the same values you’d expect from others – this isn’t an experience you’d want to be on the receiving end of. No seriously Natalie, I’m not holding out a secret hope that we’ll get back together. A lot of people, especially Unavailables, are afraid of finality and this can also be a part of a general commitment resistance.
When you break up, it’s best to take it that it’s ‘done’ so that you don’t languish in limbo putting your life on hold and delaying processing your feelings.
Also never give someone license to dip in and out of your life. I believe that a loving, healthy relationship with mutual love, care, trust and respect is out there for me.