Like the OP, I don't look down on anyone who reads m & b, but I have to say I don't know anyone who has read a mills & boon novel since 1980, and even then the women who read them were at least 60. (Not being ageist, honestly, I am just saying that it was always 60+ people who read them.)
I don't like m & b, or romance novels at all in general, and prefer a good horror, a psychological thriller, or a crime novel. I do also like some young adult fiction (like The 100, and Hunger Games, Harry Potter, and even Twilight.) Also, I occasionally like to read a children's book I enjoyed in childhood...
I don't like chick-lit, but do like chick flicks weirdly... (in addition to horrors, thrillers, comedies, sci-fi, crime drama, and action films.)
Others things I love are planes, trains, and cars, and books on history, from as recent as the last decade, way back to prehistoric times. I also have a big fascination with science, and physics, and nature.
Bet the guy the OP was on about would not be able to conduct a conversation with me. I would be too much for him. Far too well-read, and intelligent..
(Like the vast majority of the women on here.)