It depends on what kind of fiction you like, as romance is a kind of meta genre that spans every other genre. Knowing nothing about you, other than the fact you are on HN, I would recommend The Rosie Project. It is a contemporary comedy romance, one of the only works of fiction Bill Gates has ever put on his yearly recommendation list.

Overall, your best bet is finding a community and lurking. Maybe asking for recommendations.

Reddit has a number of communities. /r/RomanceBooks is the main one, but there is also /r/fantasyromance, /r/HistoricalRomance/, /r/ScienceFictionRomance/, etc... If you are a guy and kinda feeling out of place, there is also /r/Romance_for_men