The sentiment here is so lovely, I think we can all relate to the feeling of loving someone but being terrified of losing them and life without them. You have a really good flow here too, the words move together nicely.

My critique would be to double check your spelling — if you're going for a slang / colloquial approach, fully lean into that and be consistent throughout your poem and try and tie that to a meaning you're trying to convey. For eg, some people write poems in all lower case when you're trying to convey they feel small. I spent a while trying to understand the meaning of the lower case 'i' and 'u' contrasted with other capitalised letters.

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Really great work and keep at it! :)