Is it normal to feel nothing over losing my best friend?

Background story: I HAD this best friend (let's call him Bobby) who recently ended our friendship abruptly. My boyfriend always suspected Bobby of using us when we would hang out with him. He would text us an hour before he works to "chill" with us, but it began to seem more and more that we was using us as a ride to work. He would also text me asking to hang out after work in which he would accompany me for about an hour and a half and then ask to go home, because he was tired and wanted to sleep. I started finding out that he was going home only to be picked up by another group of friends to go and hang out with them. I graduated 2 years before Bobby, but I would always give him a ride to school if he missed his bus, or if he had a spare. I would buy stuff for Bobby when he forgot his wallet, one time I even bought him a $50 dinner at a steakhouse. The frequency in which he "forgot" his wallet seemed to increase the more I bought stuff for him. Up until recently I also partook in the use of marijuana and I began to notice a pattern with Bobby -- when he was aware that I had weed on me, he would text me to hang out and when I knew I was dry I would not receive a single text. Now, the fight that caused the demise of our friendship happened on his birthday. My boyfriend and I decided to surprise Bobby for his 19th by renting him a very expensive hotel room and paying his cover AND drinks for all the bars we went to. My boyfriend and I got into a very heated fight at the end of the night and it caused me to storm off back to the hotel. Long story short, a lot of drama happened and we were all back in the hotel room. My boyfriend was in the shower and Bobby was consoling me. He told me, "we're all drunk right now, so in the morning we will talk it all out. I am not mad, you guys did not ruin my birthday, don't worry. We just all have a lot of fired up emotions and we will sort through them tomorrow morning." That reassured me a lot. In the morning I dropped everyone off at their houses and texted Bobby once again apologizing for the what had happened. He then assured me it was perfectly okay and that he was not mad. The next day, I texted him so we could meet up and talk and got no reply. Same with the next day. And the next. Finally, he decides to text my boyfriend telling him that he is actually mad at the both of us. So, after reassuring me at least 5 or 6 times that he was not mad whatsoever, he decided to be mad at us. I called him out for it and also told him that he should have talked to us instead of ignoring us. He played the pity card on me and claimed that "everything is always his fault" and then he ended the conversation. Bobby likes to play the pity card when he cannot justify his actions and has done so multiple times. So, based on everything that I have just said, do you think I am an asshole for not being upset about losing Bobby? Or is it within good reason?