Carefree sex

So I meet this guy a back in October and we both agreed to be "friends with benefits". From the beginning I knew what I was getting myself into. I wasn't expect in a relationship from and the same with him. We've had issues, he has come to me plenty of times with issues that he has had in regards to the custody problems with his kids. That was something that I wasn't ready to hear about at first. (The first mistake was not setting boundaries in what we decide to disclose to each other). So I let him vent caus e you never know what someone is really going through. I try my best not to disclose to much of my personal business with him. Last week on Valentine's Day I wasn't expecting nothing from him not even sex. He did text me to say he wanted to see me that night. Well I told him I was at dinner and left it at that. He didn't ask anything before and I told him that I would give him a ring when I got home that night. I did think he would care about what I was doing on V-day night. So when he came over he asked. I told him it was a dinner group thing and that's what it was and nothing else. I was little confused at why he wanted to know but kind of enjoyed that he was actually concerned. But we didn't "go there".