Nikah Without Parents Knowledge

السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللهِ وَبَرَكَاتُهُ > I'm in love with a man since the last two years. We're **18 and 19** > currently. Is it possible for us to get nikahfied after a few months > in order to not get sins because we talk to each other? We just want > to refrain from getting more sins. We want to get **nikahfied > secretly** and have a proper nikah in the presence of our parents > and relatives after we complete my studies. Meaning after 4 to 6 > years. We don't really plan to indulge in sexual activities. We have a > few **witness available** already. Kindly advice in accordance with **Hanafi** Fiqh, it will help us to arrive at a final decision.