"你比我最喜欢的毛衣更适合我"

Simplified Meaning:

The speaker is expressing that the other person feels just right to them, even more so than something they love a lot. Think about having a favorite piece of clothing, such as a cozy sweater that you always want to wear because it makes you feel good and comfortable. Now, imagine someone making you feel even better than that cherished sweater. The speaker is saying that this person is an even better match for them, offering a sense of comfort and happiness that surpasses their favorite item. It's as if this individual completes them perfectly, fitting into their life in a way that feels natural and right. For example, if you've ever had a best friend who understands you more deeply than anyone else and makes you feel at ease with their presence, that's the kind of feeling being described. This saying highlights the deep connection and special relationship between two people and suggests that they are meant to be together.