Slow song suggestions!

Hey everyone! The most important part of my wedding to me is definitely the dancing. I would love to start out the night with a good mix of pop and 70s dance music/oldies that are fun for all ages to dance to such as The Temptations, Hall & Oates, Earth Wind & Fire, etc. and then as the night goes on and the older folks are leaving and everyone’s pretty tipsy, I wanna throw in some fun hip hop/rap songs and 90s throwbacks.
I would love to incorporate some slow songs to give people a break, but there are lots of singles at my wedding. What are some songs that might fit with the vibe I’m going for and also not be too depressing for singles? Haha. Thanks!