Things that i liked in I Need Romance 3 and what I'm looking for more 

A more mature?  Drama i mean they are actually kissing not just touching lips and theres a lot of them and also alot of skinship

Noona romance :D

I just love the cuteness of the main female lead 

Main guy is not a douchbag from start to finish 

Overall a feel good drama not so heavy and not too melodramatic

Please recommend any drama that has at least one of this points :D

Waiting for someone to reply. I LOVED INR3

I think Witch's Romance and I Hear Your Voice (even though it was not light) were pretty good too.

If you're looking for a show that has REAL romance, Something About 1% (2016) is as real as it gets. Not a noona romance but it's honestly the most real romance I've seen on screen.
I watched i hear your voice anf i loved it too :) 
Something about 1% is still broadcasting so i might wait for it to finish first
No, Something About 1% ended weeks ago. It's fully subbed!
In my opinion " I need romance 3" is the best of the "I need romance series"
     The following dramas have kind of a similar feel:
Mariage not Dating- hilarious and touchy sexy and great kissing scenes????
Dal Ja's Spring- Noona romance 
Discovery of Romance- great romance more adult theme but romantic and sexy too 
Last Cinderella-  noona romance to the max but Japanese (you can not miss this one)
what's up fox!- It's an oldie but really good!!!
give any of these a try I bet you won't be disappointed!,,

PS: I totally second "I can hear your voice"-  it is one of my top 10 best drama ever
I second Dal Ja's Spring and Something About 1%.  Hopefully the latter starts a permanent trend because sterile romance needs to die.  And I'd add My Queen--much hotter than the kdrama imo.  But Long Vacation still stands as my fav Noona pairing.  
Thanks for all the recommendations guys!! 
Noona Romances are my jam!  I'm creating a list, my goal is that it will be very comprehensive!  Here's what I have so far.
https://thedramanoona.wordpress.com/the-noona-meter/