many men do it subtly. They'll "help out" a female friend with some grocery $ after hearing her single mom sob story, then make a move and get to bend her over. They'll stop in the next week, hear the story with a wink and a nod, they'll offer her some "helping out money" and she'll bang him twice, before and after dinner. It'll continue until he gets broke one week and she's all like "you don't help out anymore, you aren't a good friend" and the arrangement will end.
i knwo a few dudes with this situation. They're paying for sex but won't admit it. Who knows how many "friends" this girl has, dropping 50 or 100 a week for groceries and a quickie.