What does " 'cause" mean in this sentence? Could you paraphrase this sentence easier to understand better?
"'Cause" here is a shortened, informal version of "because." You can also find alternative spellings of "because" such as "'cuz," "'cos," and "'coz," mostly used when texting. You cannot use these forms in formal writing. You can understand the full sentence as meaning, "because what kind of man would I be, if I left you when you needed me the most."