You don't have to condemn any newbie's post as a scam. You all started out like this
Lol no, most people didn't start out with a 45k$ trade request. Most scammers do though. They also tend to get very defensive and/or hostile when someone questions them. We've seen it all, so we warn others.
If you want to spend 45k$ on Bitcoin, use a trusted exchange. Submit the required KYC documents, deposit your dollars, and withdraw Bitcoin.
He can buy from me but i only send BTC when the funds really appear on the bankaccount.
Money can be sent from a stolen bank account. The bank will go after the money, you'll lose it again, and your Bitcoins will be long gone when that happens.