Please help!!!!

So my fiance told me at the engagement party that the ring he propsed with wasn't my offical ring and that I could choose between another option. I like the ring he chose but I'm not a fan of princess cut diamonds. This is the other option the bottom one is the one he proposed with.

Update* So after much back and forth my fiance finally confessed and said he wanted me to keep the ring he chose because it was special to him....He could've said that in the first place 😒, but anyway Thank you ladies for all of your help. I really do love the ring.