How To Regain Virginity?

hi, i m scared because i had sex before marriage, and i am going to get marry, i am scare weather my would be will come to know that i am not a vigin, because to whom i am getting marry, he knows each & everything about sex, but i dint tel him that i had sex before. Please help me, i dont want him to get to know that i had it before. I want the same pain which we get for the first time. I wanna feel the same pain, please help me