Why does my girlfriend have a stomachache and bloating as soon as she meets?

As you said, if she hates you, you should face the problem correctly. From the perspective of Chinese medicine, it should be related to her mood. Fear of having sex with you should be the root cause, because she is always worried about "that thing" when she meets you, so her mind is restless, overthinking and worrying, which seriously hurts her spleen and stomach, so she will have the symptoms of stomach pain. Simply put, this is caused by heart disease and needs a cardiologist.