Joe & Betty

Men say that women play games when it comes to relationships. I suppose that is true, but men play just as many games and can be as difficult to decipher.
Case in point, I have a friend we'll call her "Betty." "Betty" works in an office surrounded by married men. One of those men decided to set her up with one of his single friends. We'll call the single friend "Joe."
Now, my friend Betty is sweet girl, pretty, but slightly deficient in the self confidence department. As she describes it, Joe is everything a bachelor should be. Tall, handsome, smart, successful, easy going, funny... the list goes on. Like myself, Betty is on a spiritual path trying to grow closer to God through prayer and Bible study. She discussed her beliefs with Joe who says he is a Christian, but admits that getting closer to God is not a priority for him right now. This should be a red flag for Betty, but it's difficult finding good, single, Black men, so she doesn't want to rule one out based on one piece of criteria.
So, Betty and Joe went on their first date this weekend. It was a good time, and at the end of the evening they ended up back at his apartment. The conversation was winding down, and he, being an amateur bartender fixed them a few drinks. Betty doesn't drink, which is a good thing, because alcohol impairs her judgment. If she had been drinking she might not have had the strength to resist his charm and sex appeal.
Out of respect for Betty an Joe I won't give you the steamy details of their goodbye kiss, but I will tell you Betty managed to end the evening with her virtue in tact.
The thing is now, how to know if Joe is really interested in seeing this through or if he is being polite. The date was Friday. He called Sunday. She e-mailed him Monday, he gave a positive, yet brief response. She texted him on Tuesday and he texted back that he was in meetings all day. Most people, men and women, never learn how to give bad news well. We don't like to disappoint so we draw things out needlessly so we don't have to say what needs to be said. Like, instead of saying, "I don't want to go on anymore dates with you" a person says, "I'll call you..." but you never hear from them again.
Anyway, I like Betty and Joe seems like a decent fellow. From the way she described the situation I couldn't offer any useful advice or suggestions. All I said was to give it a week. If he doesn't ask you out again leave it alone and move on.
Any thoughts out there?