DEAR ABBY: EAR ABBY: One of my sons is dating a young woman who seems to care deeply for him, but is very cool and distant to our family. He goes to nearly all of her family’s events, but she seldom comes to any of ours. She has been to one birthday get-together at a restaurant, a wedding and a play where I bought the tickets for her, myself and all my daughters-in-law. She has been invited to fam…