Sometimes. If the sentence is two independent clauses then they would need either a period or a semicolon. A comma would be used if you had an independent and dependent clause.
I thank number two but not sure
Answer:
Life
Explanation:
It's life because when you are with someone you love and cherish you want to be around them all the time. And when you are together all you can wish to see is their smile and that makes your LIFE better.