Liveandlearn - who cares what others are doing and what they can get away with. Worry about yourself. That's the kind of mentality one finds among elementary school children. It does not reflect a mature way to go through life as an adult.
You will have to figure out how to balance the lies, knowing you could get caught (by family, friends, elders, etc.) at any moment. You will live a double life. You will be a person with dual identities. Do not think for a moment that you will escape unscathed from living like that.