There are three women that Hitler "dated" in his lifetime that we know of—most notably, his fiance Mimi Reiter and his mistress Eva Braun. It's believed he also had a sexual relationship with Geli Raubal, his niece. Reiter attempted suicide before eventually dumping Hitler. Geli Raubal committed suicide in 1931, and Eva Braun committed suicide with Hitler.
Hitler was also a vegetarian for most of his adult life. Some authors argued that Hitler's vegetarianism stemmed from a fear of cancer, which killed his mother. He did eat meat on occasion, so it would be likely that Hitler chose not to eat meat for health reasons as opposed to ethical ones.