Gurudev, is it possible for me to merge with you while being in this body; or will I have to leave this body for that?
No, do not leave the body. Do not do such things and do not even think about it. Who told you such things? We are all anyways one. Do not be under this impression that you can merge only by dying and casting off the body. This is foolishness.
The physical bodies anyway can never merge into one. The physical body always remains separate. If you look at all of us at the level of the breath, we are all one. When you go even deeper into the subtle layers, you will see that everything is an extension and expansion of the same mind. So do not do anything foolish. Just meditate, and be regular with Seva, Satsang and your Sadhana. You will see that in no time a fountain of love and happiness will come up from within you, and you will exude great contentment.