What to do with a "pushy" lover?

Hello Everyone!

  I normally do not like to talk about personal business online rather it's mine or someone else.  This post was a request from a friend of mine that wanted all of you to help him with a problem. This is his problem: He is in a strictly sexual relationship with someone, who is more than half his age, older than him. They known each other for a while and been "together" for 6 months. She refuse to accept that they are just "sex buddies" after he had repeatedly told her that he did not have romantic feelings for her and that it was "just sex" for him. She has even confess that she loves him. He told her that he do not feel the same for her, but she not having it, and keeps on referring to him as her boyfriend after he have told her he is not her boyfriend. He have stop her from cooking for him and going out or anything that can be seen as a date. Because of the large age gap many of you may be saying to yourself.."He doing it for the money" which I can tell you that is not the case. He has a job and a college degree, and has always taking care of his own business.

I told him that he should just leave her alone. If they are not on the same page then it is time to cut the cord. Now, he wants to hear from you my lovely readers. Should he cut ties with her or should he get into a relationship that he is being forced into just to be nice to her?  Leave your advice in the comments below.