Please Translate

Please translate the following to Japanese:

"I regretfully admit that I'm actually beginning to like my stepfather.... still not going to call him father though"

Sorry, I'm unsure about "regretfully".
Do this speaker hate his step father?
And how serious?

1) I never want but admit that...
残念ながら確かに
私は義父を本当に好きになりはじめました...
とは言え、まだ彼を父と呼ぶつもりはありません。

2) I can't help but admit that...
私は義父を本当に好きになりはじめたことを認めざるを得ません...
とは言え、まだ彼を父と呼ぶつもりはありません。

I think maybe both are too strict to use in everyday conversation.

Sorry, I was misreading!
stepfather: 継父
father in law: 義父
that person: あの人

BTW, in Japanese conversation,
I think it's more natural
to call stepfather "that person" or "him" and so on euphemistically
than directly.

残念ながら確かに
私はあの人を本当に好きになりはじめました...
とは言え、まだ彼を父と呼ぶつもりはありません。