Dear Friend,
I suggest that you get some psychological counseling to find our WHY you fear intimacy with a man. Fear is not a sign of a religious vocation. Such a problem is essentially a psychological matter. As St.Thomas Aquinas tells us, grace builds on nature. We are not to ignore our various forms of illness by escaping to the spiritual. (This is what the Christian Sience people do.) I know that this probably sounds scary to you. You have nothing to fear. Put your trust in God and make use of the gifts that He has given to us in the knowledge He has provided through the various fields of health providers. You are in our prayers.
Fr. Vincent Serpa, O.P.