Dragon XD

Don't know if this will be of much help but there are only 2 mangas that I can think of fitting this description: Honto Yajuu and Renai Nante Yurushimasen! I'll add more if I come across them!

YEEESSS, I've been wanting something like this for awhile now!!

To me, I'd take anything where the couple are sweet to each and give gentle affection, there doesn't have to be sex

Thank u so much

http://www.mangago.me/read-manga/koi_wa_nanairo_shichihenge/
Maybe this one? Though there aren't that many sex scenes, (the couple is really cute tho ლ(´ڡ`ლ)

http://www.mangago.me/read-manga/katekyo/
http://www.mangago.me/read-manga/kimi_ga_koi_ni_midareru/
http://www.mangago.me/read-manga/otonari_no_nikushokujuu/
http://www.mangago.me/read-manga/love_mode/
http://www.mangago.me/read-manga/from_701_goushitsu/
http://www.mangago.me/read-manga/yebisu_celebrities_kuge_x_masunaga_ver/
http://www.mangago.me/read-manga/boku_ga_suki_da_to_ienai_wake/
http://www.mangago.me/read-manga/kami_sama_no_iutoori_moegi_yuu/
http://www.mangago.me/read-manga/wasuretai_itoshijin/
http://www.mangago.me/read-manga/hidoku_shinaide/
http://www.mangago.me/read-manga/sekaiichi_hatsukoi/
http://www.mangago.me/read-manga/itou_san_kuraka_sui/
http://www.mangago.me/read-manga/tight_rope/
http://www.mangago.me/read-manga/hatsujou_animal/

I've been looking for ones like these. I haven't come across many, at least from what I remember.

This one’s all about the gap
http://www.mangago.me/read-manga/white_noon_black_night/

I'm inlove with those kind of stories so I collect them. Just pick out the seme ones
http://www.mangago.me/home/mangalist/48139/