For us who care about the Catholic faith?

Stop having sex with your boyfriend. Stop doing whatever it is that you are doing that causes you to need to lie to your parents. And go and talk to your priest, or at least go to confession before next Sunday. It is Lent. You know what you need to do, do it. God will forgive you. You also must have respect for yourself, and sex outside of marriage and dishonoring your parents are in addition to everything else, not respecting yourself. Talk to both your therapist, if you have one, or at least to your priest. And as Jesus would say, go and sin no more. Peace.