Here are 100 story ideas you can steal: http://www.eadeverell.com/100-story-ideas/

Here are 52 romance story ideas: https://www.eadeverell.com/52-romance-story-ideas/

If you're having trouble deciding, you might want to try the Idea Ranker: https://www.eadeverell.com/idea-ranker-writer-worksheet-wednesday/