Yes, Star Wars can also be a love story. Who can forget the famous "I love you / I know" dialogue in Empire Strikes Back?
Rogue One is probably the best of all the "new" Star Wars, reminiscent in charm to the original three. In timeline, it's the prequel to the original sequel trilogy, and a sequel to the subsequent prequel trilogy (you got that, right?).
It's a war movie. It's a space fantasy. It's got spiritual bits. And it's a love story.