Fill in the gap with an appropriate preposition.
I can confide ______ his honesty.

Confide in: 
English Meaning - To show confidence by imparting secrets. 
Bangla Meaning - বিশ্বাস করা; নির্ভর করা। 
Example - I can confide in his honesty.

এছাড়াও, 
Confide to: 
English Meaning - To tell something secret or personal to someone you trust not to tell anyone else.
Bangla meaning - বিশ্বাস করে কাউকে গোপন কথা বলা। 
Example - He confided his secrets to a friend.

Source: 
1. Cambridge Dictionary. 
2. Merriam-Webster Dictionary. 
3. Accessible Dictionary by Bangla Academy.