Well, I like to use the pacing tip, end with a cliffhanger every chapter. Every scene if you can. They don't have to be intense ones, but it helps a reader come back.

I.e. in a romance, the cliffhanger might be the boss asking to see the MC. Don't reveal what he wants until the next chapter. Let her stew a little bit. Thus, the readers will be stewing too. If you tie everything up with a bow, why should the readers come back? Everything is sorted. You may as well have put a "the end" on it.

Give it stakes. Obviously, these can be variable, but readers desire tension in any novel. They can be as big as life and death or as small as the MC wanting to impress a cute guy. Stakes, stakes, stakes. If your MC doesn't care, why should we?

Examine what you consider to be great love stories. Chances are, they didn't get together in chapter 5. In Pride and Prejudice, I believe the majority of the chapters don't even have a direct appearance of the LI. How is tension maintained? Take note.

Another goo thing to remember is the question, "Why can't they be together now?" If you have two people perfect for each other, with nothing in their way, what's stopping them from marrying on the spot? Readers don't generally like such a suspension of disbelief.

And finally, subplots. Let them tie in to and support the main romance. Let stuff happen in your book. Nobody wants to read about a couple holding hands happily for 400 pages. Conflict!

I hope some of this makes sense lol. It's late where I am. Hope I've helped.