Marriage dilemma....

The closer I get to God, the more marriage is a need be. I am in a relationship of two years with my boyfriend. We stay together and we're pregnant. All I can think about is getting married and getting right with the Lord. I love him very much and we do discuss it but I don't know when it will be.

Am I wrong for not wanting to give the baby his last name if we aren't married by the time the baby come??