Great numbers, BUT previous owner bought for almost half recently

[Ahmie H.]

Hello investors, I need help analyzing this deal. I found a house that has GREAT numbers (cap, cash on cash, gross yield, etc.). But according to Zillow, the current owner bought the house a few months ago for almost half as much as he's selling it now (which matches the Zestimate). I don't think that matters because the numbers still look great based on how much rent the current tenant is paying, but my boyfriend thinks I'm getting ripped off. My argument: if he didn't know that history, he would've thought it was a great deal, so why does the sale history matter if it doesn't change any numbers for me? Thanks in advance for your advice!