Well in the end you should do what is best for YOU.
If you can let him stay with no EXPECTATIONS and more or less keep your detachment then it is good for PAVING the way, however if it is going to cause you to go spinning off or to be riding the rollercoaster then then I would say NO.
There is no right or wrong answer and either way it is not going to make him finish his MLC any faster. It may slow things down but that is also hard to say.
It is a chance to show him your changes, but you must be ready for that.
