If you have sex with your girlfriend and break up, only to marry someone else, that is still promiscuity. And it does refer to premarital sex.

Here is an example: the Bible never says “don’t do drugs”. It does say “don’t fall into drunkenness” drunkenness includes intoxication. Doing drugs is still prohibited by the Bible.

If you have sex with your girlfriend and break up, only to marry someone else, that is still promiscuity. And it does refer to premarital sex.