Means exactly what it says

Nothing wrong if you see your wife with another guy. If you see them kissing or having sex, that's another issue.

Regardless, it would be human nature to get jealous and angry which doesn't signify love.

If this had happened to Jesus, he wouldn't hate either of them; he would be angry at the sin they've committed.

Im sorry i have to swear.

Fucking brilliant answer mate

So being angry at the sin is the feeling I should have. What would be the solution?

Forgiveness in your heart, and move on with life.

Yes. Being angry isn't a sin itself; it can be the necessary emotion to do good. Be angry at the sin, not the person.

When Jesus was on the cross waiting to die, he wasn't hateful at all the people who were against him, but the sins they committed.

He prayed to give them forgiveness and their hearts to be changed, and that's what we all should be doing.

Ask, seek, knock. God won't leave you empty handed

I'm not sure if this is happening to you or not, but if it is there is recovery in the Lord!
Read some Psalms, they are full of victory over hurt.
Psalm 147:3
He heals the brokenhearted and binds up their wounds.
Psalm 30:2
Lord my God, I called to you for help, and you healed me.

Praying emotionally honest, X-rated prayers in fervency, for His help is better than droning on for years to the sky, out of some religious sense of "what is acceptable to men", based on false humility.

The first, you will likely eventually may get over yourself enough, to hear and He will respond.

The second, well never knew anyone, who got over that, nor do see anyone there, who would care because they are righteous in their own eyes. (It's kinda sad-you-sees)

Most "church-folk" wouldn't like that but I could care less, you shouldn't either so lets go seek Him regardless and forcefully bring our whole being, regardless of how messed up, any part of us is, to Him!

May the Lord of Joy reign in your hearts!