From my experience trust a really complicated, either you relief or got hurt.
Trusting is a good value not everyone has it so it's so important to not give 100% for any one.
Situations with people will lead you to deal and to trust but first you have to read people well test them in different ways and then trust and I said earlier not 100%
Always keep 10 to 15% doubt to defend yourself of being hurt.
Hope I gave you a good advice and if you need help in anything I ll be there