Is requiring the guy to use a condom even though you have an IUD being over the top?

Last night I had a hookup for the first time. I told the guy I wanted him to use a condom, which offended him because he was like, “Why do I need to use one if you already have an IUD? Do you think I’m some STD-ridden guy?” I told him I just don’t know him that well. Either way it was fine in the end, he put it on and it was a fine night. Now I’m thinking, was I being a pushover?