Nice Guy: Not to be confused with a nice guy (that is, a male that is nice)- When used as a noun instead of an adjective, Nice Guy refers to people (men or women) who believe basic social expectations are currency for sex.
Nice Guy: I don't understand, I'm a good listener, I help carry his/her groceries, and feed the cat while he/she is away, and he/she won't even let me touch him/her!
Sympathetic ear: Uh, because as a human being you should be doing those things in the first place, and OH YEAH: nobody has to have sex with you, and probably won't want to because it's obvious you think basic decency is sex money! To be clear: you are trying to trick people into thinking your Niceness is generosity, when they can clearly see your transactional intent. It's gross. Stop acting like a Nice Guy.