@MrAntiquity
Ryan is right. You should always be escalating. That girl should have made the decision that she might wind up sleeping with you before she agreed to meet you, and the only way to get her to make that decision is to make it clear that that is what you wanted. You didn’t make it clear. There were many possible outcomes, including sex, but also including a nice comfortable conversation over wine with someone who is just in her city for a little while. In the latter case, inviting a male friend to join doesn’t sound so strange.
–Lee
