Dear Sir,
We both love each other very much & have full faith on each other, but the thing that disturbes me somewhere in my mind is that, I want to know if my wife had sex with her past relationships,which I am not able to ask her.
How can I find it out?

This should be of no concern to you. What if she ever thought of having sex in her past relationships?

Not your business, and if it makes a difference one way or another, you are not the one for her. Drop it before you get obsessed.

Do you love her ? If you do then realize her past helps make her who she is.
Don't get all caught up what if and what was. Enjoy the fact that you have found someone to love and continue building a life with her. Look forwards not backwards.

Trust me buddy... you don't want to know her number.

Why would you want to know? You planting a flag? You don't need to know. She's with you now. That's all that should matter.

If she says 1... then what? You know she had sex with 1 guy... and you're going to be insecure about that one dude.

If she says 18... then what? Are you going to divorce her?

Be safe. Don't ask.

I think this issue is not disturbing u. It is killing u. Heard of "Curiosity kills the cat"?

You are just curious about her past. Think harder... I bet there are many innate reasons as to why u want to know about her past.

Are u afraid u don't match up to her ex-es?
Do you value her worth by counting her number of sex experiences?
Are you facing a possesive syndrome that is eating you up?

There are indeed many reasons that stir your mind to ask such a question. It is not wrong. But be careful... it can be addictive. This is similar to a woman asking her husband "Have you ever cheated on me?" The same question goes on and on throughout the marriage because perhaps the woman finds joy in hearing her husband deny the fact.

U should stop wondering about the number of times or persons she has encountered; rather, count the number of times she enjoys sex with u from now on...

First you are married, and she may or may not have had sex with someone before you married her,

Honestly it is none of your business, you should not ask her or even worry about it, the fact is she is with you and married you.

Like the others have said...
You find out
Then what??
You leave her because you can't get over or bear the mental images of her being with somebody else?
You stay and try to deal with KNOWING she had a past that she buried when she chose you over any other guy?

What did either accomplish??