<human>: So my girlfriend[19] and I[20] have been together for almost 4 years. We were each others high school sweat hearts and now I'm in my 3rd year of college and she's in her 2nd (at the same school). We have had an almost perfect relationship except for a few small bumps, but yesterday she told me she had been thinking about the idea of taking a break at some point. She said she just wants to test our relationship and give us both a chance to live on our own for some time, and possibly see other people. Am I wrong to be hurt by this? I have never really thought about seeing other people and the thought of her with someone else kind of makes me sick to my stomach (what can I say, I'm a romantic). What should I do, and what does this mean?

Could you distill the essence of the text into 1-3 sentences?
<bot>: gf[19] wants to take a break with me [m20] at some point, am I wrong to be upset?