Couldn't find it but looks like Sakira's artwork
http://www.mangago.me/r/l_search/?name=sakira
Hm.. I could be wrong but for me they are the same and the correct order of those pictures would be : 3, 2, 1.
First : picture 3 : it seems that the guy with long hair is "forcing himself" on the other.. Like maybe they kissed and after that the guy with curly hair got excited done there. We can see his reaction through is pants. So both of them are surprised (maybe it's their first time doing this kind of stuff that's why the curly guy is embarassed) and the long hair guy decide to help him (blow or hand job?).
picture 2 and 3 : then they have sex and the curly hair guy is on top and the long hair one is beeing fucked.
Does anyone know the name of this manga?
I just have those pictures..
(I'm asking a second time 'cause I really wanna know it!)
https://ibb.co/FYJmFtR
https://ibb.co/d6NRy1n
https://ibb.co/dtHVm9r