<human>: At four months of dating, he's my first real boyfriend, and I lost my virginity to him. Before we slept together, he told me he'd been tested recently and is clean. I asked him why in particular he got tested (besides being proactive), and he told me it was because he noticed something "weird" and wanted to make sure it wasn't an STI/D. 

But today, somehow it came up that his previous girlfriend, whom he dated last year, had a "curable STI," of which he doesn't remember the name. He said that he had slept with her before she had told him, and that he got tested afterwards. 

Now, I'd like to think I'm a pretty sane person, but am I overreacting by being hurt that he didn't tell me the real reason he got tested? He said that he thought it wasn't relevant, but isn't relaying your previous sexual partners' even curable STIs of importance? I told him I have no symptoms of an STI, but that many STIs are symptomless, and that I should've made him get tested before we had sex. Again, am I overreacting? I plan on getting tested next week just to make sure I'm in the clear....So, am I overreacting?! Is my anger at him uncalled for? My reasoning is that his ex may have been lying about being "cured."

Can you provide a brief overview of the text?
<bot>: Boyfriend's previous girlfriend had a curable STI and he never told me about it and now I'm wondering if I'm overreacting by being mad at him and pissed at myself.