I heard here that if we think that going through S and a possible D is difficult, then we will give up once we face all the pain of reconciling.
It's hard work, and it is such fragile situation that you may feel like walking on eggs all the time. The best will be to take it easy and do not jump into the R so fast.
By other hand, it's also so exciting that he wants to work on the M, there is hope depress, and that is very important and very promising. Have some fun too, maybe you guys can date, dress nice and charming and relax a little bit.
Praying for you and your M. Easy now, everything will be OK.