Walking in love does not mean that we are not affected by the attacks of the enemy. God has given us spiritual weapons to use against those attacks and offenses.
Ephesians 6:10-11 AMP
 Be strong in the Lord be empowered through your union with Him; draw your strength from Him that strength which His boundless might provides.  Put on God’s whole armor the armor of a heavy-armed soldier which God supplies, that you may be able successfully to stand up against all the strategies and the deceits of the devil.
When we choose to obey God by believing him and not receiving the imaginations/thoughts that the enemy uses to trick us. We are empowered to Walk In Love because we have submitted ourselves to The Word/Will of God.
Ephesians 5:1-2 AMP
 THEREFORE BE imitators of God copy Him and follow His example, as well-beloved children imitate their father.  And walk in love, esteeming and delighting in one another as Christ loved us and gave Himself up for us, a slain offering and sacrifice to God for you, so that it became a sweet fragrance.