Putting aside the extravagant gift to his AP, I find the dynamic that seems to exist following the discovery of his affair to be fucked up;
You seem to feel obliged to accept his adultery if you think he didn't love the person he cheated on you with.
He thinks you are obliged to/likely to.acceot his infidelity if he can convince you he didn't love her; or even throw out technicalities like "I never told her I loved her ...that means I didn't/she didn't think I did". No it doesn't actually.
You could have loved her and not told her. She could have presumed you love her without you saying it explicitly.
But - what does it fucking matter?
Why has he got you ... Or have you got yourself caught on this hook of whether he loved her or not?.
It's a deal breaker whether he did or not.
You don't have to accept it whether he did not not.
He's committed adultery, he's betrayed you, and you have a family together. He lacks the most basic integrity, loyalty and decency. That's what matters.
Why get caught up in the vague, messy, unprovable quagmire of whether he "loved" her or not.
He wants you in that quagmire, you know that.
Cause he's not on the wrong end of a divorce solicitor while you're caught in it.
(Oh and his adultery is actually worse if he didn't love her, because he was prepared to betray his wife and risk his marriage for someone he didn't even love).
It also says a lot about t him that he'd gift an affair partner something vastly worth more than what he'd gift his wife, life partner & mother of his kids.
What does that say about him?