I want him to fall in love with me

I've been hooking up with this guy for a couple of weeks now, and it's been great. We agreed we would be friends with benefits as neither of us are really looking for a relation. We don't really talk unless we are making plans to hang out, but we do go on dinner dates and such every now and then. I have absolutely no feelings for this boy; I'm still madly in love with my ex, but I want my fwb to fall in love with me, or actually develop feelings for me. I just want to feel desired by someone even though I have no intentions of actually being with him. What can I do?