This is my specialty!
I love romance & don't read anything but!
Paranormal romance is a special favorite of mine..Im a bit of a guru.
In YA (in no particular order):
Twlight Series by Stephenie Meyer
Blue Bloods by Melissa De La Cruz
House of Night Series by P.C. Cast & Kristin Cast
Vampire Academy Series by Richelle Mead
Hush, Hush Series by Becca Fitzpatrick
The Wolves of Mercy Falls Series by Maggie Stiefvater
The Mortal Instruments Series by Cassandra Clare
The Immortals Series by Alyson Noel
Fallen Series by Lauren Kate (GENIUS!)
Wicked Lovely Series by Melissa Marr
The Iron Fey Series by Julie Kagawa
Evernight Series by Claudia Gray
Dream Catcher Series by Lisa Mcmann
The Vampire Diaries Series by L.J. Smith
The Secret Circle Series by L.J. Smith
Night World Series by L.J. Smith
Need Series by Carrie Jones
Trylle Trilogy by Amanda Hocking
My Blood Approves Series by Amanda Hocking
Thirst Series by Christopher Pike
The Hunger Games Series by Suzanne Collins
Sweep Series or Wicca Series by Cate Tiernan
Uglies Series by Scott Westerfield (Not so much romance, but a tiny bit, more intriguing storyline..I shy away from books like this but a friend forced me to read it anyway, and its actually good! I'm a romance freak remember, so Its hard for me to get into books with not a lot of romance, but I indeed enjoyed this! Its based in the future and is very scientific and really straightforward..loved it.)
(If you need more, let me know..but this is just off the top of my head, my YA best paranormal romance.)
In adult paranormal romance, these are some steamy, sensual, and romantic titles that I enjoyed THOROUGHLY!
Outlander Series by Diana Gabaldon
Black Dagger Brotherhood by J.R. Ward
Sookie Stackhouse Series by Charlaine Harris
Fifty Shades of Grey by E.L. James (not precisely paranormal, but it seems so! I am SO obsessed with this series right now, I finished it and am left wanting MORE! If you can get past the steamy, sexy first book, (SPOILER ALERT), then comes mind-blowing romance!!!! If you are of a mature age, I suggest everyone read this series!)
I have tons more, but if you are really stuck on romance and not so much paranormal, then I suggest the WallFlower Series by Lisa Kleypas! I'm completely addicted to this too, its historical romance which I know a lot of modern day readers shy away from, but it is so dreamy, sexy, and completely romantic! They all have wonderful endings, (which I need in books) and its a series of beautiful love and enduring friendship with four girls who are wallflowers and cannot get a man to marry in the 1800's, but are swept off there feet one by one! SO BEAUTIFUL!
Let me know if you need anything such as, series order, more suggestions, or any questions at all!
I've read every series and some are harder to get into than others but I do think you'll like them!