Time to let go?

Okay so my boyfriend is leaving to go to Illinois for spring break. He let me know yesterday that his ex e-mailed him telling him she loved him and also flirting in the note. He told me I have nothing to worry about, that he can control himself. I have no reason not to trust him until this situation. We never argue over these kinds of things, but last night I showed my true feelings. And let's just say I was negative the whole hour we talked. So I guess my question is do you think I should worry about it? Or what should I say to convince him that he would be making a huge mistake? I'm worried. Help please!

OK. I don't think you should worry about it now. If he starts acting a little wierd than I would ask him to talk and see what his response is.