What is a good beer for starters, or people who don't typically enjoy the taste of beer? Asking as a beer lover, my roommate does not enjoy most beers, nor does my fiancé. I have nobody to share my enjoyment and taste testing with. What is a good beer that I can get them started out on to maybe get them to eventually appreciate the taste of beer? 

They enjoy sweeter flavors, whereas I enjoy more bitter flavors. 

My roommate recently started drinking Angry Orchards and will occasionally drink a Blue Moon Cinnamon Horchata Ale, so he is starting to appreciate the taste more, but my fiancé just has not found her favorite yet. She says that she didn't mind Dos Equis as much as others, but still didn't really like it.

Is there a beer that is good for starters that is not overwhelmingly "beery"?
I would recommend starting with a draft Hefeweizen or Belgian Wheat, or a fruit flavored mead such as a blackberry or passion-fruit mead.

I would also recommend pairing the beer with a good meal so the experience is not centered around the beer, the beer is instead an accent to the experience.