I would just tell him how you feel, why you feel that way , ask if he has any problems or ideas on how things might run smoother together,
or ( I advise better than I purvey it myself )
Im with a lad now who is keen as mustard and good grafter , but his brains are fcukin brok, in fact i think they still in the wrapper brand fcukin new still, he forgets everything he has learnt every single night of the week, so everyday he does something daft that sends me into a zeberdy style hissy fit, screaming to him what fcukin planet is he on , he is waste of fcukin oxygen and that if his brains were made of gold he be in debt. shout he makes me wanna bang my head off a longun till i bleed from the ears,
Using this style of approach has done absolutely fcuk all to solve the situation over 18 months now, so i dont recomend this at all :nuts: