It's also possible the PMS was driving the desire to go meet him after all last night. You really do deserve to be treated with thought and consideration and it seemed clear to me Prof was more interested in getting some "strange" than in maintaining his current relationships and showing basic consideration. You should never have to feel like you're just an "available hole." Good luck!
Me - Mostly mono female, 39 yrs old, married to Leo.
Leo - Poly bi-sexual male, 37 years old. Married to me and looking.