I really love inuyasha myself that was such a great anime watched it all loved it. Are you sure you want an anime strictly dedicated to romance? Don't get me wrong but inuyasha wasn't just strict romance as there were lots of fight scenes, so do want a mixture of romance and action?
But yea I get what you're saying there still was a lot of romance present in inuyasha I mean like by the end there so many ships eg kagome x inuyasha , sango x Miroku , rin x kohaku , naraku x kikyo and like the fact spoilers Inuyasha marries kagome in the end. But I digress - anyway there are some animes that have lots of romantic undertones but still adhere to action elements while supplying the protogonist with a love interest who in their own right is a very memorable and unique character. Like in deadman wonderland. But anyway here's some anime recommendations that might interest you. Inu x boku ss, elfen lied, sword art online, our an high school club, the world God only knows, nana, chobits, my little monster, full metal panic, seckaiichi hatsukoi, junjou romantica, sex pistols (the anime not the band ), spice and wolf, vampire knight, love live!, tona guru, waiting in the summer, log horizon and many more.