Look at me! I'm cheerful because I put a cheerful sticker on my forehead.
Madness string 5781
I'm glad that you've clearly never experienced that kind of grief and can't relate, but you really shouldn't jump to the worst conclusion of others based on your own experiences. Strong feelings don't have to be romantic to be strong or to be valid, and you minimize the person's very valid feelings of love and grief by claiming they must be.