Not sure what's going on here or if this is normal and appropriate? Been staying at my boyfriend's house for a few days, and today he left me alone at his home to go have a beer with a few friends at a friend's house. The occasion was palnned a week in advance, so I knew about it. He messaged to ask if I was doing okay and if I had the dinner he prepared for me. Is this something guys in general do, or is my boyfriend out of line? We've been together four months.