I would like to know who this " breeder who produces 30,000 plus balls a year" is who told you "it would be best to keep them together". I'm gonna go out on a limb and guess that he/she doesn't exist. I can say that with great certainty because there isn't a single breeder, big or small, I have EVER talked to who would tell you it's BEST to keep them both together. What it looks like to me is that after you were told elsewhere that it was a bad idea, you came here hoping someone was going to give you a big hug and stroke your hair all while telling you that all those meanies don't know what they're talking about and that YOU know what's best for those animals. Well, I promise you that you're not gonna get that here. You're going to get cold, hard facts, and the best advice on keeping ball-pythons you could possibly get. Obviously you chose to ignore the advice you've been given by several people now.
Here, in case you missed it last time... BALL PYTHONS DO NOT CUDDLE!!! ONE IS TRYING TO DOMINATE THE OTHER FOR THE BEST SPOT IN THE TANK
Sounds like you have a male and a female because they don't "hold tails". They're locking up and best case scenario, you're going to end up with eggs, that is if your snake isn't too small to breed and ends up eggbound and dies... But good for you. You put those snakes together because you know best! Take that you intarwebz meanies!!!
(Not gonna bother wasting my time asking about temps and humidity in that 75 gallon glass aquarium. But I'll wager a guess... 130 on the hot side from an unregulated UTH and 70 on the cool side, with about 20% humidity...)