It’s a good start though. If you’re willing to sleep with them then you’re more likely to marry them compared to you’re not willing to sleep with them crowd. I

It’s a good start though. If you’re willing to sleep with them then you’re more likely to marry them compared to you’re not willing to sleep with them crowd. If you’re not physically attracted to a person - there’s a near zero chance you will sleep or marry them. So, it naturally follows that being more physically attractive is good for your chances.