Would a man need to pull out if he had prostate cancer?

Talk to him about it. Maybe there’s a reason he does what he does.

If you’re comfortable enough to have sex with him, you should be comfortable enough to talk about sex with him.

It depends upon the treatment he had.
He might still have a prostate and does not want to risk getting you pregnant.
If he had a radical prostatectomy he does not need to worry about that. He can orgasm without making a mess.

Oh I see ok. Wasn’t too sure if he could get someone pregnant.

I wouldn’t worry. Didn’t you say you were 53?

If he didn’t get a vasectomy years before then there is a chance he is still carrying sperm.
There are different treatments for prostate cancer. The prostatectomy is the only one that guarantees he is 100% safe.
Radiation, seeds, hormone, chemo,... all have a chance of unintended pregnancy.

I happened to have a vasectomy about 25 years before my prostatectomy. That was a bit unfair.

Ok make sense

Sounds like he is a practicing Catholic.