Is it ever truly possible to trust anyone?

I do not believe that anyone can truly ever fully trust someone. I only say this because everyone has doubts no matter who you are at one point in your life you will have doubts. So in that case this is being said through personal experience. I say this because yes you may trust someone but trust is mainly an illusion. It is an illusion of weather or not you care enough about someone. An illusion of something that you want such as saftey or love. Yet trust can never happen fully between two people. Someone will always be wondering if the other will betray them or not so in the end no trust is not fully capable of happening.