I feel so crazy sometimes.  My boyfriend has a lot of female friends.  I have trust issues because of some things that have happened in our past.  There is a girl he used to work with that he still talks to.  He says they are just friends and nothing has ever happened.  She had to go by his work today so she brought him a slushy.  It really bothers me that she did that.  I feel like I am being a total lunatic about this.  I try to look at it from my relationships with people.  I wouldn't just bring one of my guy friends "a treat" to his work just because.  I feel like there is something more going on there but he always says no.  If I keep persisting I'm afraid he's going to get sick of it and break it off with me. 

Any advice? 

Call him out on the emails. He's going to be pissed about it, but it's going to give you the opportunity to point out what hurts you/worries you most (ie- making light of the situation, the nickname).

Of course, there's a downside to doing so and that's that he's going to get pissed enough to leave and not work through it.

Hi Constantine.  pregnancy can make you feel more vulnerable than you would otherwise be.  I think in your heart of hearts, you know.  As you said yourself:

"I don't think anything physical has ever happened and I don't think he has feelings for her now. "

Let it lie and get on with your life together.  Show him that you love him and don't doubt that he loves you back without rock solid proof - and of course always keep your head held high.... 

BigWhiteWolf: Thank you for your advice and support.  I really do appreciate it.

I'm actually not pregnant, she was making fun of him saying I would be pregnant soon and he would have to marry me.  I could have wrote that more elequently originally.