I agree with Rowe, even though you might be in the minority, you must stand by your ideas. Look to date men that share your beliefs... they are around... there are probably more virgin men by choice than you realize. However, it would be difficult, not impossible for someone that is already sexually active to be expected to wait for marriage to have sex (again).
Joining Christian singles groups does not guarantee you will meet a man that will want to abstain from sex until marriage.
Love/Committment before sex is probably the best way to go. Sex before love can lead to endless headaches--especially if you are seeking a good relationship.