How to store lovers sperm for later usage

My wife is currently talking to a potential lover. He is adamant that I be fed a steady diet of his cum. He is proposing on nights they cannot get together that my wife pour his cum all over her pussy and she make me clean it all up. He would collect his ejaculate from masturbation then give it to us. So my questions are

1- How do we store it ? I'm assuming the freezer
2- how do you thaw it so that it is remains as close to how it was when
He shot the load ?

you mean to tell me not a one of you have done this

Thank you Terry. This would be for when he is not around and my wife wants her pussy licked. He says I should never see her pussy without either

1- His cock buried in it
2- Covered in cum
3- Or cum leaking from it

we experimented in the past with my cum. We would freeze it and put it on her and I would have to lick. It was never the same though. Gets all watered down and loses its thickness. Not sure how to store and thaw the semen so that it retains its original consistency

It's my understanding that it normally is "watered down" and it thickens for a few minutes when it comes in contact with the room air. Only something like 3-10% is actually sperm and the rest of the fluid is for mobility and nutrition. If it were to stay thick like that, you can imagine how much less mobility it would have and much less of a chance of ever finding the egg....so I don't think you'll ever be able to thaw it and remain thick.