Hello everyone, 
my boyfriend of two years (a wonderful and supportive man) is going to a birthday party next Saturday night, while I'm going to a family dinner. My SO is a physics PhD candidate while I work for the government and have absolutely no interest in physics. 
Well, this birthday party will be full of physics students, teachers and other scientists (the host is a former colleague of my SO) and I'm terrified he might meet another woman, prettier than me and with an interest in the same field. 
In the past I tried to prevent him from going out without me, by begging him to stay with me or by pretending I was sick at home. 
This time I want to respect his boundaries and freedom but fear and insecurity are all consuming. 
Thoughts?