Can we give something we don't have?

With money, the answer seems straightforward. But what about things like love, hatred, trust, respect or kindness?

Can I give or express something that I don't actually possess or experience within myself?

For example, can someone genuinely give love without feeling love? Or can hatred be expressed without hatred already existing within the person?

Is the expression itself evidence that the thing is present, or can something else produce the same expression?