Yes, you can make money self-publishing romance. It is possible to earn a living from writing and publishing romance novels, and many authors do just that. Of course, like with any career, there is no guarantee of success, and how much money you can make will vary greatly depending on factors like your writing quality, marketing efforts, and luck.
That said, there are some steps you can take to improve your chances of making money from your romance novels. First, make sure you are writing quality stories that readers will enjoy. Take the time to revise and edit your work, and get feedback from beta readers or editors to help make your stories as good as they can be. Secondly, market your books effectively. Use social media, online bookstores, and other channels to reach potential readers and get them interested in your work. Finally, price your books fairly. If you charge too much, you'll deter potential readers; if you charge too little, you won't make very much money.
In short, yes, you can make money self-publishing romance, but it takes effort, talent, and some luck. But if you're willing to put in the work, it can be a very rewarding career.