Seems to look a lot like my peony (cactus type petals).
It could use a friend or two. Once peonies take hold and start to fill with blooms, there is nothing prettier. Unfortunately, it is not usually for more than 2 weeks, so enjoy while you can. Herbaceous double peonies can become pretty heavy, especially if it rains. And it always rains on peony blooms, you can count on it. So, try to give it a little support, at least the stem with the flower.