How do I know

I’ve been talking to this guy for a while and we did date but now we’re back at the talking stage. When we broke up or when we get in fights I can’t seem to eat. It’s really weird I love food but for days I won’t eat because it makes me nauseous but that’s only when me and him aren’t working out. When we got back together and started talking again I was fine and now I’m eating normally. I’m terrified of the word love. Especially with him, love is a huge word and I don’t know if I’m ready for it. He is perfect and even when he messes up or trips on something it’s the cutest thing and I like him more for that. Is this love?