No, it's not a common phrase at all. In normal English usage, it seems rather strange and not a typical expression you would hear in everyday conversation or see in general writing.
No. Such content is vulgar and inappropriate for public sharing. It violates moral and ethical norms and may also be against the rules of many platforms.
He could be the type of person who is always there for his friends in tough times. He shares his money, time and emotions without hesitation. She sees all these and loves his big heart more and more.