hey bro, I am in the same situation, but my girl takes care me with oral if she is not in the mood. Ask her man, guys need it. Otherwise ask if you can see other women for sex only.
As far as your cycle, deca is hard (no pun) to come off and you will not only have a low libido, but with low tests your muscles will shrink for the next 6 monts to the starting level, with me PCT didn't work at all. And as mentioned before you will feel like shit for a long time.