Let me know, thanks.
Idk how you don't know what love is.
Romantic love doesn't even capture half of it. The only way I can describe love is the feeling that you'd take a bullet for someone/something (can also be a dog for e.g.). No point discriminating between platonic/familial/romantic/the love you feel for a pet. They all combine over your lifetime to inform a general umbrella feeling.
Romantic love gets more attention, I think coz its more intense. But in my experience at least, it also feels more transient. I've got friends that I know I'll die with, whereas even when I've been in love with a girlfriend, I never know for sure if it'll last.