I have to add this kickass post by @Norski as food for thought.
Sitri isn’t your only choice for this type of working. You have options.
I haven’t worked with anywhere near as many spirits for love magick as he has, because i generally don’t do love magick. However, i’d like to add the following spirits to his list: Inanna, who i very highly recommend. I also have to put in a good word for Beleth, Babalon, and Belphegore, all of whom are fantastic.