im not sure about how much smut you want, but here's my suggestions:
1. http://www.mangago.me/read-manga/jackass_sawatte_ii_tte_dare_ga_itta_yo/
2. http://www.mangago.me/read-manga/konna_nichijou/ (they are already together)
3. http://www.mangago.me/read-manga/sweet_heart_trigger/
4. http://www.mangago.me/read-manga/mou_ichido_nando_demo/
5. http://www.mangago.me/read-manga/nemuri_otoko_to_koi_otoko/ (okay this one I dont consider rape...idk. but the smut is hella good)
6. http://www.mangago.me/read-manga/flaver/ (thiis is amazing)
7. http://www.mangago.me/read-manga/liquor_cigarette/
8. http://www.mangago.me/read-manga/kare_no_shousou_to_koi_ni_tsuite/
Okay, thanks for the suggestions!
Yo, give me a list of the best non rape yaoi smut you've got. Like, anything... so tired of the "partner is a rapist but MC falls in love with them anyway" trope.