system
Given the following post, respond as if you're commenting on Reddit:
human
[ASOIAF] Dating in the Seven Kingdoms

If you are a lords son,  before you are betrothed to cement an alliance, what are your options for dating? 

Would it be acceptable to be seen with a lover that you had no intention to marry? Are you forced to deal with whores? 

If dating without the prospect of marriage is acceptable who would you be able to date? I’d imagine women of your class would need to maintain their virtue, so would having a tryst with a low born be acceptable?
gpt
If you are a male son of a landed noble, you can mess around with as many unmarried women as you like. If they produce children you may have to have it discretely taken care of via giving them money or moon tea. Many medieval nobles had mistresses after marriage too. Just don't sleep with the wife of anyone important or good at dueling and you're safe.

If you are a female though no dating/sex until marriage (to a noble, hopefully from a good house). They were expected to produce true blood children, as any doubt in the heritage would result in a civil war. We never see the punishments before the Sparrow's takeover, but they were probably severe. Their parents may want to keep this a secret though, to avoid the stain on their honor, and will force them to either abort or have to be sent to a nunnery.