There are plenty if books that teach drawing. You can get them at most craft stores like Michael's or Hobby Lobby. Or even your library. There are also lots of YouTube videos. Other than that practice makes perfect.
If you found out your lover (Husband/wife/significant other) was your sibling that you never knew you had (separated at an early age). Would you stay with that person as a lover/mate?
Well if it meant my mother-in-law was actually my biological mother, I would leave never to be heard from again. That would be more horrific to me more so than being my husband's sibling.