Yes and no. If a woman wants to get married or to be a mistress for the sole purpose of financial gain, she is a whore. Again, you don't mention the possibility of emotional attachment and feelings. Like others already pointed out, it's not quite cut and dry for some scenarios. Let define the $
ratio as the financial gain vs the love factor ratio. Is she a whore if it's 1:1? Is she a whore if the ratio is 1:2? or 1.5:1? In most instance, trophy wife is probably a whore. And almost all mail order brides are whores also.
I don't have problem with other guys' DNA in her. But that's just me. As long as both parties are honest with each other. I don't see what the big deal is. And no, I don't have a problem with a WG bearing my children. I don't even have a problem with a WG being a WG and my wife at the same time. Then again, that's just me.
Is an ass kisser a whore? Technically, no. Let's be realistic, playing favorism is everywhere and totally common. I am pretty sure that all of us play that game. If you were a cop, wouldn't you ask the police officer who's about to give you a speeding ticket to cut you some slack and flash your badge? Wouldn't you ask your friend to give you his/her employee discount to buy a high dollar item? Don't you ask your coworker to help you out on a project which isn't his/her responsibility and then treat him/her lunch or dinner later? Don't you give good tip to a waiter/waitress hoping him/her to give a great service next time?