The only odd behavior I noted here, was sleeping with five men and kissing only two.

Now to your questions:

a) Hypomania doesn't stop until it wants to.
b) Your family, namely your husband, new.
c) He was trying go get a grip of a situation bad for him.
d) The grass is always greener in the other side.
e) Nothing that hasn't happen before. Try to make mends.

I think you are looking for a good excuse, (as bipolar) to justify your behavior.

I'm sorry not to have any guidance to offer. You asked, I replied.