Trusting

You're running a big risk in trusting him.

I am sure of his trusting you.

I did wrong in trusting such a fellow.

A certain door-to-door salesman made a fool of a trusting old lady and went off with a lot of her money.

You did wrong in trusting too much in your ability.

Tom is too trusting.

He's too trusting.

You're too trusting.

She's too trusting.

Tom is open and trusting.