If you want to go to network, go. If this is not a great networking opportunity and you really are not interested in going, don't go. If you are going because YOU are viewing this as a "date" with xbf, don't go. Why? I think you would hope or want it to be something that it isn't. I doubt your xbf has changed much in the last couple of days.
If I remember correctly, your xbf has a tendency to say things like, "I was planning on asking you to go for pizza, but I realized it was 8:10" or some other caca response. If this event won't be fun or truly beneficial, just go for a walk or grab dinner with your d or friends. Let xbf think whatever it is he thinks about your not going.
3 kids BD 12/15/13 (IDKIILY. ) Rope dropped Cirque du Soleil style D final 9-9-14 "Some people are born on 3rd base and go through life thinking they hit a triple." Barry Switzer