Am looking for a yaoi manga with a jealous & very horny seme that he wants to do it al...

Under Grand Hotel

http://www.mangago.me/read-manga/katekyo/

http://www.mangago.me/read-manga/abiru_junjou/

http://www.mangago.me/read-manga/ze/

http://www.mangago.me/read-manga/k_sensei_no_yaban_na_renai/

None of those are yandere though. If you want something harder I suggest looking in that tag. http://www.mangago.me/tag/yandere/

And all of those you have to wait to get to the part you are asking for.

Sorry I forgot a couple:
http://www.mangago.me/read-manga/hokenshitsu_de_suki_ni_shite/

http://www.mangago.me/read-manga/addicted_to_love_after_school/

http://www.mangago.me/read-manga/ochiru_seija_no_seppun/

Be warned this 2 are weird: http://www.mangago.me/read-manga/venus_ni_seppun/

http://www.mangago.me/read-manga/kimochi_no_yukue_meiji_kanako/

http://www.mangago.me/read-manga/k_sensei_no_yaban_na_renai/

Does this one have the thing that I am looking for ?

following

Yes but nit really until volume 2 chapter 2: http://www.mangago.me/read-manga/k_sensei_no_furachi_na_junai/