The best way to ask a girl out is to just ask her in a completely natural way.
A “yes” won’t always be guaranteed in the process, because there are there are several factors that affect the girl’s decision.
In any setting she looks for the social value in a man.
Dating is a stage of romantic or sexual relationships in humans whereby two or more people meet socially, possibly as friends or with the aim of each assessing the other's suitability as a prospective partner in a more committed intimate relationship or marriage.
This term may also refer to two or more people who have already decided they share romantic or sexual feelings toward each other.
These people will have dates on a regular basis, and they may or may not be having sexual relations.
Put a young, alluring, sexy woman in a guys house on his couch, he won't know the FIRST THING about how to make her feel ATTRACTION for him.