So I was born and raised Catholic, and I follow every precept/commandment to the letter except for premarital sex. My girlfriend and I have been having sex for over a year, and although I know that fornication is a sin, I dont know why, but sex with her doesnt feel sinful. We both were adult virgins, waiting for that special someone, and we both intend to get married as soon as we graduate from college. The reason I havent proposed is because I know she would like a nice wedding, something that I cant afford right now, but also because our families would be vehemently opposed to it and make our lives impossible to lead (the would want us to finish college). So we have both made a firm commitment to each other to stay together and see it through, but I sometimes think about whether fornication really means loveless sex such as casual sex than sex outside of marriage.