Jesus said “Love your enemy—do good to those who hate you, bless those who cures you, pray for those who mistreat you” (Luke 6:27)
He didn’t say “feel good” about people who hate you. Do. Others—enemies included—are the recipients of our good deeds, not as a reward, but because when we were His enemies, God treated us the same way.
Aren’t you glad. Now bless your enemy.