Ofcourse anyone can love any one
The point is the prohibition of the marriage between the mentioned person in islam is true .
Any if u r muslim u need to obey it . because in certain levels or real creditability of a muslim she/he well be convinced about that rule
But in case u do not accept it , so don’t but it will show the commitment level of the muslim
No religion is in need of someone but we believe that people need the religion
So u are free to choose that is my opinion ( I am muslim )