RKI-625 Luna Tsukino, I ejaculate wildly every time my girlfriend's older sister says "I love you." I'm a premature ejaculation Pavlov dog.

[Conditioning allows living things to respond with conditioned reflexes. - Reference: ``Pavlov's Dog Experiment''] Even though I like my girlfriend, I can't ejaculate even when we have sex, so every time she says ``I love you,'' my dick strangely tingles. - When I noticed the repeated "I love you", I ejaculated... - When his girlfriend's older sister finds out about this strange constitution, the days of experimental training related to ``love'' and ``ejaculation'' begin. - Am I the same as that dog who keeps ejaculating reflexively just by saying "I love you"?