"Romantic relationships" – love connections, amorous associations, partnerships in love.
For "movie", alternatives are "film". "Follows" could be "depicts". "Successful lawyer" might be "renowned attorney". "Dumped" can be replaced with "abandoned". "Long-time girlfriend" as "committed love". "Get over the breakup" becomes "recover from the split". "Wild and unforgettable bachelor party" could be "thrilling and memorable pre-wedding event". "Las Vegas" stays the same. Made.of.Honor.2008.720p.AMZN.WEBRip.800MB.x264-...
"Fans of the genre" – enthusiasts of the style, admirers of the type, lovers of the category. "Romantic relationships" – love connections