Sorry joe. When I mean, "adult" I mean complete erotica, not my thing
and I want something more in depth than something like twilight. Ah, Nicholas sparks..what can I say, I have a weakness when it comes to sappy love stories haha. I dont think anything will ever come close to how much I love the ID series lol. Im willing to try anything though, if someone reccommends something specific 
Okay I rephrase the kid stuff, because I do enjoy it from time to time, I just need substance (again something more challenging than twilight haha) so please give me some suggestions.
what are your favorites?
And keep in mind, I love the romance! haha. Im a 21 year old female, I need romance 
No need to rephrase, just clarification.

If you like Sparks, more power to you, but I worry about that guy.

His books are always so tragic, and yes, romantic, but...ick. There comes a point where you just want to say "Really dude? Grow some balls!"

If you go for funny, try Mary Janice Davidson's "Betsy The Vampire Queen" series (first one is
Undead and Unwed). They get a little muddled in the middle (and they aren't done yet), but the first four books? Funniest things you've ever read. And the last one was REALLY good, so I'm hoping they'll get back to what they were originally supposed to be (small issue with the author's ego since she was moved into hard cover

That screwed her writing). It's a long story what the plotline is, but I'll tell you that the hero has been called "The Undead Roarke"

(I don't agree, lots of HUGE differences between Sinclair and Roarke, but there are a few similarities too

).
If you like some angst along with your funny try the "Black Dagger Brotherhood" by JR Ward. I will warn you, these are a bit "harder" than straight romance, but nowhere NEAR erotica. They're romantic, well written, funny, and there's an ongoing "fight" with an evil force. There are good books and bad books in the series, but most of them are really great.
And of course, you could read the QUEEN of the "paranormal" genre (like Nora is queen of romance), Anne Rice.
Interview With The Vampire is probably my all time favorite book (next to
Pride and Prejudice, and they're pretty much neck and neck

). Danger, romance, intrigue, and high drama. IWTV is part of the "Vampire Chronicles". Look them up, you won't regret it (and if you want substance in a book like you couldn't find from
Twilight??? This is where to find it.
Twilight is a cheap crossover ripoff of VC and HP.

These books are AMAZING. And though they're about Vampires, they're NOTHING like what
Twilight tried to pass off, even though she tried.

). Have fun!