text: question  for catholics...? if you're a person who goes to mass every sunday answer this.  what do you think about premarital sex? is it considered a sin? what have preists/pope said regarding this if anything. marriage between unmarried people is fornication not adultery as some have mentioned above.  catholics believe that fornication hurts the integrity and dignity of the people involved especially if one or both people are very young.  this discussion doesn't even go into birth control or having children out of wedlock.  with love in christ.