Interesting question. When I went into federal prison, I was also 46 and was looking at 8 years. I'd never been locked up before and I was very depressed. The first couple of months were the hardest. To me, prison is like the movie Groundhog Day, where every day you wake up and it's the same as the day before. You have to figure out how to get into a routine so that the days will pass. My wife visited me as

Condoms are not on the Commissary List. But, condoms are somehow smuggled in and are available for purchase, but we have no idea what they might cost.

Send it to them and see what happens. Doing nothing will yield... nothing

The only way to find out is by asking your fiance. The inmate's privacy is protected. There is no disclosing how much money is on their books, how much phone time they've used, who is putting money on their books, who they are talking to, or who are visiting. 

It is true that an inmate may file for divorce if they someone on the outside handling the actual court filing. The petition can be notarized in prison, and then that document must be filed with the family court in your jurisdiction. There is nothing to this that makes it "faster", but if you are sitting in prison, time is not a factor as you have plenty of it.

As an inmate, you treated like anyone else. What goes on the outside is the same as the inside. If you treat others with respect, you will, in turn, get respect. If you mouth off, you're gonna get your coconut cracked. 

Probably the hardest part is getting used to the fact that everyone you know on the outside (mostly wife and kids) are living their lives while you are locked up. You have absolutely no control over anything. It feels like you have died and are watching your loved ones live their life and you cannot participate. Your mind plays tricks with you, you lose faith in your relationship, etc.

write them a letter, it will get the ball rolling

Obviously, there are no statistics on the subject, but if it is like the other women's facilities, there are definitely relationships that turn sexual. It is more prevalent when the sentences are lengthy. Women with long sentences will look for a partner to ride their bid out with. If they have partners, than the sex would be often but it can't happen in the "light of day" as it is against the rules. And, this is not limited to women

This is not going to be easy on either of you. He is thinking you are seeing other people because he can't see what you are doing. The mind plays tricks and you feel desperate. Connecting, communicating, visiting, talking on the phone, writing... it's all you can do. Do as much as you can and hope for the best. You might do everything right, never run around and he still might not come around. Good luck!