:sl: Sister Rabi'ya,
It depends what you mean. The Prophet Muhammad saws told us Show mercy to those on earth, and the One above the heaven will show mercy to you. (Tirmidhi)
We also know that Allah's mercy encompasses everything (Qur'an 40:7) so likewise we must also show mercy.
Love for creation can fall into different categories, depending who you're talking about
:
1. Good humans and Jinn, as well as all other creation - we love them and show mercy to them. (
animals in Islam)
2. Disbelieving humans and Jinn - we are still merciful and kind to those of them who are not unjust/oppressive, yet we hate their disbelief in God.
3. Oppressive humans and Jinn - we should be firm in opposition against them, but still not transgress limits.
So for the last example, we certainly do not love Satan.
I hope this helps. If not, perhaps you could clarify exactly what you mean, inshaa'Allah.
:w: