How do you trust your significant other ??

Ladies, I have a hard time trusting that a man will love me and never cheat on me or leave me. That a man will see me as the most beautiful woman and not look at or flirt with other women.

I do believe I am an attractive woman and I know I deserve a good relationship and a good man.

But I have such a hard time trusting my boyfriend. (He’s never cheated on me).

How do you trust your boyfriend / husband when he leaves ?