I've just been recently diagnosed with BPD and ironically I'm a psychology major.

I've always had a jealously issue, with added overbearing-ness. Up until late, I had that I was insane and super insecure-which I still think so. I have a boyfriend and have been with him for 2 years and have tried to share my feelings of other females in his life. Lately, I've been feeling threatened by a classmate of his who I had a problem with last semester. Now, somehow they ended up in the same class again. I had asked him in the beginning if had any friends in the class, etc. He disregarded to mention that she was there. Right now, I'm tempted to ask him, calmly, if there's anyway he can avoid talking to her. A couple hours ago I was so gung-ho about confronting him, now I'm afraid how he's gonna react and think out of line and insane, though I probably am. Is this a smart move? How can I cope with my ridiculous suspicions and insecurities?