It is very important to put issue of genotype into consideration, before relationship go far, it is advisable to do the test from both parties. I have seen when an innocent child suffer her life in treatment and injection due to her nature of sickness cell problem, both parents spend a lot in this treatment without peace of mind, especially the poor family. Every income will be be spending if the two parties proceed to get married and bear children if confirmed not compatible.
What is the joy of bringing a child to the world to suffer an innocent child with unbalanced health?. The child will be a liability to the family and both parents will always be treating such child in weeks or monthly. Wish am sure it will not be that easy for any parents facing such and abandoning their work and time but Everytime is hospital and treatment. The family I witnessed such with was hell and pity for when this child on different types of drugs and treatment, several times absent from school. I am just advising base on what I have seen and danger or problem in it, because if problem is to much in the family, there is no peace and joy, how can the love continue when money is spend on a sick child numerous uncountable times and seeing child like he might not survive it at times. Such burden and problem weaken love from both husband and wife. we should think twice before we decide in such relationship because even in Africa, no peaceful family or happy family who can't reprocreate it causes separation or even divior in most African culture.